Remove .html extension from links

chrome/common/extensions/api/i18n.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 [
   {
     "namespace": "i18n",
     "description": "Use the <code>chrome.i18n</code> infrastructure to implement internationalization across your whole app or extension.",
     "types": [],
     "functions": [
@@ skipping 13 matching lines @@
       },
       {
         "name": "getMessage",
         "nocompile": true,
         "type": "function",
         "description": "Gets the localized string for the specified message. If the message is missing, this method returns an empty string (''). If the format of the <code>getMessage()</code> call is wrong &mdash; for example, <em>messageName</em> is not a string or the <em>substitutions</em> array has more than 9 elements &mdash; this method returns <code>undefined</code>.",
         "parameters": [
           {
             "type": "string",
             "name": "messageName",
-            "description": "The name of the message, as specified in the <a href='i18n-messages.html'><code>messages.json</code></a> file."
+            "description": "The name of the message, as specified in the <a href='i18n-messages'><code>messages.json</code></a> file."
           },
           {
             "type": "any",
             "name": "substitutions",
             "optional": true,
             "description": "Up to 9 substitution strings, if the message requires any."
           }
         ],
         "returns": {
           "type": "string",
           "description": "Message localized for current locale."
         }
       },
       {
         "name": "getUILanguage",
         "type": "function",
         "nocompile": true,
         "description": "Gets the browser UI language of the browser. This is different from $(ref:i18n.getAcceptLanguages) which returns the preferred user languages.",
         "parameters": [],
         "returns": {
           "type": "string",
           "description": "The browser UI language code such as en-US or fr-FR."
         }
       }
     ],
     "events": []
   }
 ]