Merge pull request #584 from shotat/patch/typo

Fix some typos

Author: Petr Chalupa

lib/concurrent/actor.rb

@@ -46,7 +46,7 @@ def self.root
     end
 
     # Spawns a new actor. {Concurrent::Actor::AbstractContext.spawn} allows to omit class parameter.
-    # To see the list of avaliable options see {Core#initialize}
+    # To see the list of available options see {Core#initialize}
     # @see Concurrent::Actor::AbstractContext.spawn
     # @see Core#initialize
     # @example by class and name

lib/concurrent/async.rb

@@ -34,7 +34,7 @@ module Concurrent
   # When an Erlang module implements the `gen_server` behavior it becomes
   # inherently asynchronous. The `start` or `start_link` function spawns a
   # process (similar to a thread but much more lightweight and efficient) and
-  # reurns the ID of the process. Using the process ID, other processes can
+  # returns the ID of the process. Using the process ID, other processes can
   # send messages to the `gen_server` via the `cast` and `call` methods. Unlike
   # Erlang's `gen_server`, however, `Async` classes do not support linking or
   # supervision trees.

lib/concurrent/atom.rb

@@ -61,7 +61,7 @@ module Concurrent
   #   set + [set[-2..-1].reduce{|sum,x| sum + x }]
   # end
   #
-  # # create an atom with aninitial value
+  # # create an atom with an initial value
   # atom = Concurrent::Atom.new(next_fibonacci)
   #
   # # send a few update requests
@@ -144,7 +144,7 @@ def initialize(value, opts = {})
     # @param [Object] args Zero or more arguments passed to the block.
     #
     # @yield [value, args] Calculates a new value for the atom based on the
-    #   current value and any supplied agruments.
+    #   current value and any supplied arguments.
     # @yieldparam value [Object] The current value of the atom.
     # @yieldparam args [Object] All arguments passed to the function, in order.
     # @yieldreturn [Object] The intended new value of the atom.