Revert typo

Author: simolus3

packages/powersync_core/test/in_memory_sync_test.dart

@@ -690,7 +690,7 @@ void main() {
       });
     });
 
-    test('stopping   tions', () async {
+    test('stopping closes connections', () async {
       final status = await waitForConnection();
 
       syncService.addLine({