Fix typo in documentation comment

actionpack/lib/action_view/helpers/asset_tag_helper.rb

@@ -155,7 +155,7 @@ def auto_discovery_link_tag(type = :rss, url_options = {}, tag_options = {})
       # ==== Examples
       #
       #   favicon_link_tag '/myicon.ico'
-      #   # => <link href="/assets/favicon.ico" rel="shortcut icon" type="image/vnd.microsoft.icon" />
+      #   # => <link href="/assets/myicon.ico" rel="shortcut icon" type="image/vnd.microsoft.icon" />
       #
       # Mobile Safari looks for a different <link> tag, pointing to an image that
       # will be used if you add the page to the home screen of an iPod Touch, iPhone, or iPad.