pack: minor typo fix

_runner/devClient.mjs

@@ -6,7 +6,7 @@ hotClient.subscribe(event => {
       <style>
         .root {
           color: #000;
-          padding: 10px 20px;
+          padding: 10px 20px
         }
       </style>
       <div class="root">Compiling Main Process...</div>