Lint: Fix more lint issues

lib/events/sync_status_update_event.dart

@@ -5,6 +5,7 @@ class SyncStatusUpdate extends Event {
   final int? completed;
   final int? total;
   final bool wasStopped;
+  @override
   final String reason;
   final Error? error;
   late int timestamp;

lib/ui/notification/update/change_log_page.dart

@@ -109,7 +109,7 @@ class _ChangeLogPageState extends State<ChangeLogPage> {
             "share, end-to-end encrypted and secure.\n\nYour quick links will "
             "appear at the bottom of the share tab so that you can remove them "
             "when they're no longer needed, or convert them to regular albums "
-            "by renaming them if you want them to stick around.\n\nDepending on the feedback, we\'ll iterate on this (automatically prune quick "
+            "by renaming them if you want them to stick around.\n\nDepending on the feedback, we'll iterate on this (automatically prune quick "
             "links, directly open the photo if only a single photo is shared, "
             "etc). So let us know which direction you wish us to head!",
       ),