fixes linefeed in test file

Signed-off-by: Eric Wang <skygragon@gmail.com>

Author: skygragon

test/mock/find-the-difference.html.20170424

@@ -6,45 +6,45 @@
     <meta charset="utf-8">
     <title>Find the Difference | LeetCode OJ</title>
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <meta name="description" content="
-Given two strings s and t which consist of only lowercase letters.
-
-String t is generated by random shuffling string s and then add one more letter at a random position.
-
-Find the letter that was added in t.
-
-Example:
-
-Input:
-s = &quot;abcd&quot;
-t = &quot;abcde&quot;
-
-Output:
-e
-
-Explanation:
-&#39;e&#39; is the letter that was added.
+    <meta name="description" content="
+Given two strings s and t which consist of only lowercase letters.
+
+String t is generated by random shuffling string s and then add one more letter at a random position.
+
+Find the letter that was added in t.
+
+Example:
+
+Input:
+s = &quot;abcd&quot;
+t = &quot;abcde&quot;
+
+Output:
+e
+
+Explanation:
+&#39;e&#39; is the letter that was added.
 " />
     <meta property="og:title" content="Find the Difference | LeetCode OJ" />
     <meta property="og:image" content="/static/images/logolarge.jpg" />
-    <meta property="og:description" content="
-Given two strings s and t which consist of only lowercase letters.
-
-String t is generated by random shuffling string s and then add one more letter at a random position.
-
-Find the letter that was added in t.
-
-Example:
-
-Input:
-s = &quot;abcd&quot;
-t = &quot;abcde&quot;
-
-Output:
-e
-
-Explanation:
-&#39;e&#39; is the letter that was added.
+    <meta property="og:description" content="
+Given two strings s and t which consist of only lowercase letters.
+
+String t is generated by random shuffling string s and then add one more letter at a random position.
+
+Find the letter that was added in t.
+
+Example:
+
+Input:
+s = &quot;abcd&quot;
+t = &quot;abcde&quot;
+
+Output:
+e
+
+Explanation:
+&#39;e&#39; is the letter that was added.
 " />
 
     <link rel="apple-touch-icon" sizes="57x57" href="/apple-touch-icon-57x57.png" />
@@ -285,24 +285,24 @@ Explanation:
       <div class="sm-line hide"></div>
     </div>
     <div class="question-content">
-      <p><p>
-Given two strings <b><i>s</i></b> and <b><i>t</i></b> which consist of only lowercase letters.</p>
-
-<p>String <b><i>t</i></b> is generated by random shuffling string <b><i>s</i></b> and then add one more letter at a random position.</p>
-
-<p>Find the letter that was added in <b><i>t</i></b>.</p>
-
-<p><b>Example:</b>
-<pre>
-Input:
-s = "abcd"
-t = "abcde"
-
-Output:
-e
-
-Explanation:
-'e' is the letter that was added.
+      <p><p>
+Given two strings <b><i>s</i></b> and <b><i>t</i></b> which consist of only lowercase letters.</p>
+
+<p>String <b><i>t</i></b> is generated by random shuffling string <b><i>s</i></b> and then add one more letter at a random position.</p>
+
+<p>Find the letter that was added in <b><i>t</i></b>.</p>
+
+<p><b>Example:</b>
+<pre>
+Input:
+s = "abcd"
+t = "abcde"
+
+Output:
+e
+
+Explanation:
+'e' is the letter that was added.
 </pre></p>
 
         <div>
@@ -338,7 +338,7 @@ Explanation:
 
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