Update doc

Author: pitr-ch

docs/master/Concurrent/Array.html

@@ -126,7 +126,7 @@ <h2>Overview</h2><div class="docstring">
   <p class="tag_title">See Also:</p>
   <ul class="see">
 
-      <li><a href="http://ruby-doc.org/core-2.2.0/Array.html" target="_parent" title="Ruby standard library `Array`">Ruby standard library `Array`</a></li>
+      <li><a href="http://ruby-doc.org/core/Array.html" target="_parent" title="Ruby standard library `Array`">Ruby standard library `Array`</a></li>
 
   </ul>
 

docs/master/Concurrent/Async.html

@@ -627,12 +627,12 @@ <h3 class="signature first" id="async-instance_method">
       <pre class="lines">
 
 
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-      <pre class="code"><span class="info file"># File 'lib/concurrent-ruby/concurrent/async.rb', line 422</span>
+      <pre class="code"><span class="info file"># File 'lib/concurrent-ruby/concurrent/async.rb', line 431</span>
 
 <span class='kw'>def</span> <span class='id identifier rubyid_async'>async</span>
   <span class='ivar'>@__async_delegator__</span>
@@ -735,12 +735,12 @@ <h3 class="signature " id="await-instance_method">
       <pre class="lines">
 
 
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-      <pre class="code"><span class="info file"># File 'lib/concurrent-ruby/concurrent/async.rb', line 440</span>
+      <pre class="code"><span class="info file"># File 'lib/concurrent-ruby/concurrent/async.rb', line 449</span>
 
 <span class='kw'>def</span> <span class='id identifier rubyid_await'>await</span>
   <span class='ivar'>@__await_delegator__</span>

docs/master/Concurrent/Channel.html

@@ -190,7 +190,7 @@ <h2>Channel Basics</h2>
 <span class='id identifier rubyid_puts'>puts</span> <span class='id identifier rubyid_msg'>msg</span>
 </code></pre>
 
-<p>By default, channels are <em>unbuffered</em>, meaning that they have a capacity of zero and only accept puts and takes when both a putting and a taking thread are available. If a <code>put</code> is started when there is no taker thread the call will block. As soon as another thread calls <code>take</code> the exchange will occur and both calls will return on their respective threads. Similarly, is a <code>take</code> is started when there is no putting thread the call will block until another thread calls <code>put</code>.</p>
+<p>By default, channels are <em>unbuffered</em>, meaning that they have a capacity of zero and only accept puts and takes when both a putting and a taking thread are available. If a <code>put</code> is started when there is no taker thread the call will block. As soon as another thread calls <code>take</code> the exchange will occur and both calls will return on their respective threads. Similarly, if a <code>take</code> is started when there is no putting thread the call will block until another thread calls <code>put</code>.</p>
 
 <p>The following, slightly more complex example, concurrently sums two different halves of a list then combines the results. It uses an unbuffered channel to pass the results from the two goroutines back to the main thread. The main thread blocks on the two <code>take</code> calls until the worker goroutines are done. This example also uses the convenience aliases <span class='object_link'><a href="#<<-instance_method" title="Concurrent::Channel#&lt;&lt; (method)">#&lt;&lt;</a></span> and <span class='object_link'><a href="#~-instance_method" title="Concurrent::Channel#~ (method)">#~</a></span>. Since channels in Go are part of the language, channel operations are performed using special channel operators rather than functions. These operators help clearly indicate that channel operations are being performed. The operator overloads <code>&lt;&lt;</code> for <code>put</code> and <code>~</code> for <code>take</code> help reinforce this idea in Ruby.</p>
 
@@ -226,7 +226,7 @@ <h2>Channel Buffering</h2>
 
 <h2>Channel Synchronization</h2>
 
-<p>The main purpose of channels is to synchronize operations across goroutines. One common pattern for this is to created a <code>capacity: 1</code> buffered channel which is used to signal that work is complete. The following example calls a <code>worker</code> function on a goroutine and passes it a &quot;done&quot; channel. The main thread then calls <code>take</code> on the &quot;done&quot; channel and blocks until signaled.</p>
+<p>The main purpose of channels is to synchronize operations across goroutines. One common pattern for this is to create a <code>capacity: 1</code> buffered channel which is used to signal that work is complete. The following example calls a <code>worker</code> function on a goroutine and passes it a &quot;done&quot; channel. The main thread then calls <code>take</code> on the &quot;done&quot; channel and blocks until signaled.</p>
 
 <pre class="code ruby"><code class="ruby"><span class='kw'>def</span> <span class='id identifier rubyid_worker'>worker</span><span class='lparen'>(</span><span class='id identifier rubyid_done_channel'>done_channel</span><span class='rparen'>)</span>
   <span class='id identifier rubyid_print'>print</span> <span class='tstring'><span class='tstring_beg'>"</span><span class='tstring_content'>working...\n</span><span class='tstring_end'>"</span></span>

docs/master/Concurrent/FixedThreadPool.html

@@ -359,17 +359,17 @@ <h3 class="signature first" id="initialize-instance_method">
       <pre class="lines">
 
 
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-      <pre class="code"><span class="info file"># File 'lib/concurrent-ruby/concurrent/executor/fixed_thread_pool.rb', line 194</span>
+      <pre class="code"><span class="info file"># File 'lib/concurrent-ruby/concurrent/executor/fixed_thread_pool.rb', line 201</span>
 
 <span class='kw'>def</span> <span class='id identifier rubyid_initialize'>initialize</span><span class='lparen'>(</span><span class='id identifier rubyid_num_threads'>num_threads</span><span class='comma'>,</span> <span class='id identifier rubyid_opts'>opts</span> <span class='op'>=</span> <span class='lbrace'>{</span><span class='rbrace'>}</span><span class='rparen'>)</span>
   <span class='id identifier rubyid_raise'>raise</span> <span class='const'>ArgumentError</span><span class='period'>.</span><span class='id identifier rubyid_new'>new</span><span class='lparen'>(</span><span class='tstring'><span class='tstring_beg'>&#39;</span><span class='tstring_content'>number of threads must be greater than zero</span><span class='tstring_end'>&#39;</span></span><span class='rparen'>)</span> <span class='kw'>if</span> <span class='id identifier rubyid_num_threads'>num_threads</span><span class='period'>.</span><span class='id identifier rubyid_to_i'>to_i</span> <span class='op'>&lt;</span> <span class='int'>1</span>

docs/master/Concurrent/Hash.html

@@ -115,7 +115,7 @@ <h2>Overview</h2><div class="docstring">
   <p class="tag_title">See Also:</p>
   <ul class="see">
 
-      <li><a href="http://ruby-doc.org/core-2.2.0/Hash.html" target="_parent" title="Ruby standard library `Hash`">Ruby standard library `Hash`</a></li>
+      <li><a href="http://ruby-doc.org/core/Hash.html" target="_parent" title="Ruby standard library `Hash`">Ruby standard library `Hash`</a></li>
 
   </ul>
 

docs/master/Concurrent/ImmutableStruct.html

@@ -96,7 +96,7 @@ <h2>Overview</h2><div class="docstring">
   <p class="tag_title">See Also:</p>
   <ul class="see">
 
-      <li><a href="http://ruby-doc.org/core-2.2.0/Struct.html" target="_parent" title="Ruby standard library `Struct`">Ruby standard library `Struct`</a></li>
+      <li><a href="http://ruby-doc.org/core/Struct.html" target="_parent" title="Ruby standard library `Struct`">Ruby standard library `Struct`</a></li>
 
   </ul>
 

docs/master/Concurrent/MutableStruct.html

@@ -97,7 +97,7 @@ <h2>Overview</h2><div class="docstring">
   <p class="tag_title">See Also:</p>
   <ul class="see">
 
-      <li><a href="http://ruby-doc.org/core-2.2.0/Struct.html" target="_parent" title="Ruby standard library `Struct`">Ruby standard library `Struct`</a></li>
+      <li><a href="http://ruby-doc.org/core/Struct.html" target="_parent" title="Ruby standard library `Struct`">Ruby standard library `Struct`</a></li>
 
   </ul>
 

docs/master/Concurrent/SettableStruct.html

@@ -99,7 +99,7 @@ <h2>Overview</h2><div class="docstring">
   <p class="tag_title">See Also:</p>
   <ul class="see">
 
-      <li><a href="http://ruby-doc.org/core-2.2.0/Struct.html" target="_parent" title="Ruby standard library `Struct`">Ruby standard library `Struct`</a></li>
+      <li><a href="http://ruby-doc.org/core/Struct.html" target="_parent" title="Ruby standard library `Struct`">Ruby standard library `Struct`</a></li>
 
       <li><a href="http://en.wikipedia.org/wiki/Final_(Java)" target="_parent" title="Java `final` keyword">Java `final` keyword</a></li>