Updating comment

private_dot_mozilla/private_firefox/private_personal-profile.default/user.js.tmpl

@@ -2,6 +2,9 @@
     My custom defined user.js browser settings for Firefox
 
     ln -s ~/data/configs/browser.configs/user.js ~/.mozilla/firefox/<profile-folder>/user.js
+
+    Many of the following are taken from various user.js hardening profiles.
+        Primarily https://github.com/pyllyukko/user.js/blob/master/user.js
 */
 
 /*******************************************************************************