Fix typo in user defaults

src/invidious/users.cr

@@ -36,7 +36,7 @@ DEFAULT_USER_PREFERENCES = Preferences.from_json({
   "captions"       => ["", "", ""],
   "related_videos" => true,
   "dark_mode"      => false,
-  "thin_mode "     => false,
+  "thin_mode"      => false,
   "max_results"    => 40,
   "sort"           => "published",
   "latest_only"    => false,