Fix typos & other issues in JSONP docs (#1672)

This PR fixes some typos, indentation mistakes, and corrects the language of some `code` elements.

plugins/jsonp-highlight/index.html

@@ -24,26 +24,26 @@ <h2>JSONP Highlight</h2>
 
 <section class="language-markup">
 	<h1>How to use</h1>
-	
+
 	<p>Use the <code>data-jsonp</code> attribute on <code>&lt;pre></code> elements, like so:</p>
-	
+
 	<pre><code>&lt;pre
-  class="language-javascript"
-  data-jsonp="https://api.github.com/repos/leaverou/prism/contents/prism.js">
+	class="language-javascript"
+	data-jsonp="https://api.github.com/repos/leaverou/prism/contents/prism.js">
 &lt;/pre></code></pre>
-	
+
 	<p>
-		Don't specifiy the <code>callback</code> query parameter in the URL; this will be added
+		Don't specify the <code>callback</code> query parameter in the URL; this will be added
 		automatically. If the API expects a different callback parameter name however, use the
 		<code>data-callback</code> parameter to specify the name:
 	</p>
-	
+
 	<pre><code>&lt;pre class="&hellip;" data-jsonp="&hellip;" data-callback="cb">&lt;/pre></code></pre>
 
 	<p>
 		The next trick is of course actually extracting something from the JSONP response worth
 		highlighting, which means processing the response to extract the interesting data.
-	</p>	
+	</p>
 
 	<p>The following JSONP APIs are automatically detected and parsed:</p>
 
@@ -62,24 +62,24 @@ <h1>How to use</h1>
 		</li>
 		<li>
 			Register your adapter function by calling
-			<code>Prism.plugins.jsonphighlight.registerAdapter(function(rsp) { &hellip; })</code>.
+			<code class="language-javascript">Prism.plugins.jsonphighlight.registerAdapter(function(rsp) { &hellip; })</code>.
 			It will be added to the list of inbuilt adapters and used if no other registered
-			adapater (e.g. GitHub/Bitbucket) can parse the response.
+			adapter (e.g. GitHub/Bitbucket) can parse the response.
 		</li>
 	</ol>
-	
+
 	<p>
 		In either case, the function must accept at least a single parameter (the JSONP response) and
 		returns a string of the content to highlight. If your adapter cannot parse the response, you
-		must return <code>null</code>. The DOM node that will contain the highlighted code will also
+		must return <code class="language-javascript">null</code>. The DOM node that will contain the highlighted code will also
 		be passed in as the second argument, incase you need to use it to query any extra information
 		(maybe you wish to inspect the <code>class</code> or <code>data-jsonp</code> attributes to
 		assist in parsing the response).
 	</p>
 
 	<p>
 		The following example demonstrates both methods of using a custom adapter, to simply return
-		the stringyfied JSONP response (i.e highlight the entire JSONP data):
+		the stringified JSONP response (i.e highlight the entire JSONP data):
 	</p>
 
 	<pre><code>&lt;!-- perhaps this is in a .js file elsewhere -->
@@ -139,20 +139,20 @@ <h2>Caveat for Gists</h2>
 
 <section>
 	<h1>Examples</h1>
-	
+
 	<p>The plugin’s JS code (from GitHub):</p>
- 	<pre class="lang-javascript" data-jsonp="https://api.github.com/repos/PrismJS/prism/contents/plugins/jsonp-highlight/prism-jsonp-highlight.js"></pre>
+	<pre class="lang-javascript" data-jsonp="https://api.github.com/repos/PrismJS/prism/contents/plugins/jsonp-highlight/prism-jsonp-highlight.js"></pre>
 
 	<p>GitHub Gist (gist contains a single file, automatically selected):</p>
- 	<pre class="lang-javascript" data-jsonp="https://api.github.com/gists/599a04c05a22f48a292d"></pre>
+	<pre class="lang-css" data-jsonp="https://api.github.com/gists/599a04c05a22f48a292d"></pre>
 
 	<p>GitHub Gist (gist contains a multiple files, file to load specified):</p>
- 	<pre class="lang-markup" data-jsonp="https://api.github.com/gists/599a04c05a22f48a292d" data-filename="dabblet.html"></pre>
+	<pre class="lang-markup" data-jsonp="https://api.github.com/gists/599a04c05a22f48a292d" data-filename="dabblet.html"></pre>
 
- 	<p>Bitbucket API:</p>
+	<p>Bitbucket API:</p>
 	<pre class="lang-css" data-jsonp="https://bitbucket.org/!api/1.0/repositories/nauzilus/stylish/src/master/whirlpool/style.css"></pre>
- 	
- 	<p>Custom adapter (JSON.stringify showing GitHub <a href="https://status.github.com/api/status.json">status</a>):</p>
+
+	<p>Custom adapter (JSON.stringify showing GitHub <a href="https://status.github.com/api/status.json">status</a>):</p>
 	<pre class="lang-javascript" data-jsonp="https://status.github.com/api/status.json" data-adapter="dump_json"></pre>
 
 	<p>Registered adapter (as above, but without explicitly declaring the <code>data-adapter</code> attribute):</p>