Fixing broken bug link

announce/2012/mfsa2012-59.md

@@ -16,7 +16,7 @@ title: Location object can be shadowed using Object.defineProperty
 <p>Security researcher <strong>Mariusz Mlynski</strong> reported that it is possible to shadow the location object using Object.defineProperty. This could be used to confuse the current location to plugins, allowing for possible cross-site scripting (XSS) attacks.
 </p>
 
-<p><strong>Update October 9, 2012</strong>: This advisory was updated to reflect the fact that <a href="&lt;a href=" https:="">bug 756719</a> was also fixed in ESR 10.0.8.
+<p><strong>Update October 9, 2012</strong>: This advisory was updated to reflect the fact that <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=756719">bug 756719</a> was also fixed in ESR 10.0.8.
 
 
 </p><h3>References</h3>