0306: moar info #615

see https://github.com/ghacksuserjs/ghacks-user.js/issues/615#issuecomment-460243162 - checking for updates is not a trigger, having an update **and** applying it is

user.js

@@ -194,8 +194,8 @@ user_pref("app.update.staging.enabled", false);
  * This is the update available, downloaded, error and success information ***/
 user_pref("app.update.silent", false);
 /* 0306: disable extension metadata
- * used when installing, updating and checking for extension updates: if false, all it does is hide
- * the expanded text description, if it exists, when you "show more details about an addon" ***/
+ * used when installing or updating an extension: if false, all it does is hide the
+ * expanded text description, if it exists, when you "show more details about an addon" ***/
    // user_pref("extensions.getAddons.cache.enabled", false);
 /* 0307: disable auto updating of personas (themes) ***/
 user_pref("lightweightThemes.update.enabled", false);