docs(guide/$location): fix broken link

Author: bocharsky-bw

Diff for: docs/content/guide/$location.ngdoc

@@ -164,7 +164,7 @@ encoded.
 
 `$location` service has two configuration modes which control the format of the URL in the browser
 address bar: **Hashbang mode** (the default) and the **HTML5 mode** which is based on using the
-HTML5 [History API](http://www.w3.org/TR/html5/history.html). Applications use the same API in
+HTML5 [History API](http://www.w3.org/TR/html5/introduction.html#history-0). Applications use the same API in
 both modes and the `$location` service will work with appropriate URL segments and browser APIs to
 facilitate the browser URL change and history management.