Doc Update: param name change

Change-Id: I320374f8d40ba090a561fe173bb08837abaa263a

Author: labtopia

docs/html/guide/google/gcm/gcm.jd

@@ -668,8 +668,8 @@ sent. Optional. The default value is <code>false</code>, and must be a JSON bool
     <td>How long (in seconds) the message should be kept on GCM storage if the device is offline. Optional (default time-to-live is 4 weeks, and must be set as a JSON number). </td>
   </tr>
 <tr>
-  <td><code>category</code></td>
-  <td>A string containing the package name of your application. When set, messages will only be sent to registration IDs that match the category. Optional.
+  <td><code>restricted_package_name</code></td>
+  <td>A string containing the package name of your application. When set, messages will only be sent to registration IDs that match the package name. Optional.
   </td>
 </tr>
 <tr>
@@ -707,7 +707,7 @@ sent. Optional. The default value is <code>false</code>, and must be a JSON bool
     <td>Same as JSON (see previous table). Optional.</td>
   </tr>
 <tr>
-  <td><code>category</code></td>
+  <td><code>restricted_package_name</code></td>
   <td>Same as JSON (see previous table). Optional.
   </td>
 </tr>
@@ -956,11 +956,11 @@ Happens when the HTTP status code is 500, or when the <code>error</code> field o
 object in the results array is <code>InternalServerError</code>.
 </dd>
 
-<dt id="invalid_category"><strong>Invalid Category</strong></dt>
+<dt id="restricted_package_name"><strong>Invalid Package Name</strong></dt>
 
 <dd>
-A message was addressed to a registration ID whose category did not match the value passed in the request. Happens when error code is 
-<code>InvalidCategory</code>.
+A message was addressed to a registration ID whose package name did not match the value passed in the request. Happens when error code is 
+<code>InvalidPackageName</code>.
 </dd>