improved performance and battery usage on older devices

lib/api/marianumcloud/talk/chat/get_chat_cache.dart

@@ -17,7 +17,7 @@ class GetChatCache extends SimpleCache<GetChatResponse> {
              lookIntoFuture: GetChatParamsSwitch.off,
              setReadMarker: GetChatParamsSwitch.on,
              // Small initial page; also the per-chat offline snapshot written to
-             // localstore. Older messages are paged in on scroll-up via
+             // the request cache. Older messages are paged in on scroll-up via
              // GetChatHistory. Keep in sync with ChatBloc's _kInitialPageSize.
              limit: 50,
            ),