Fix TypeScript lint warning

Change-Id: If43a2b5615f73468446ac71342fb592667817369

polygerrit-ui/app/elements/edit/gr-editor-view/gr-editor-view.ts

diff --git a/polygerrit-ui/app/elements/edit/gr-editor-view/gr-editor-view.ts b/polygerrit-ui/app/elements/edit/gr-editor-view/gr-editor-view.ts
index 7bcd833..b75c26d 100644
--- a/polygerrit-ui/app/elements/edit/gr-editor-view/gr-editor-view.ts
+++ b/polygerrit-ui/app/elements/edit/gr-editor-view/gr-editor-view.ts
@@ -127,9 +127,9 @@
   /** @override */
   created() {
     super.created();
-    this.addEventListener('content-change', e =>
-      this._handleContentChange(e as CustomEvent<{value: string}>)
-    );
+    this.addEventListener('content-change', e => {
+      this._handleContentChange(e as CustomEvent<{value: string}>);
+    });
   }
 
   /** @override */