Go Home shortcut is Alt+Home on Mac, not Cmd+Home. Initiated by followup comment to bug 259883.

browser/locales/en-US/chrome/help/using_firebird.xhtml

@@ -47,8 +47,7 @@ Contributors:
     toolbar. To enable Full Screen mode, simply select
     <span class="menuPath">View &gt; Full Screen</span> or press
     <kbd>F11</kbd>.</li>
-  <li>To go to your home page quickly, press <span class="noMac">&altKey;</span><span
-    class="mac">&accelKey;</span>+<kbd>Home</kbd>.</li>
+  <li>To go to your home page quickly, press &altKey;+<kbd>Home</kbd>.</li>
 </ul>
 
 <h3><strong id="moving_to_another_page">Moving to Another Page</strong></h3>