Fix silly code errir

Author: hlomzik

web/libs/editor/src/mixins/Syncable.ts

@@ -140,7 +140,7 @@ const SyncableMixin = types
       let sync = self.sync;
       let fallbackSync = self.name;
 
-      if (ff.isActive(FF_DEV_3391) {
+      if (ff.isActive(FF_DEV_3391)) {
         if (!self.annotationStore.initialized) return;
 
         sync = `${self.sync}@${self.annotation.id}`;