sync firefox

Hi, <!-- For the contributor, please make sure that the thread is tagged with the "sync-configuration" tag --> <!-- For Firefox for Android --> To configure Firefox Sync on Firefox for Android, please check out [[Sync bookmarks, tabs, history and passwords on Android]] and let us know if it helps! <!-- For Firefox for iOS --> To configure Firefox Sync on Firefox for iOS, please check out [[Sync bookmarks, logins and browsing history on Firefox for iOS]] and let us know if it helps!