[Glitch] Run eslint --fix

I don't like it changing files this way, but it's basically what
c49213f0ea and a few others did.

app/javascript/core/embed.js

@@ -15,7 +15,7 @@ window.addEventListener('message', e => {
       id: data.id,
       height: document.getElementsByTagName('html')[0].scrollHeight,
     }, '*');
-  };
+  }
 
   if (['interactive', 'complete'].includes(document.readyState)) {
     setEmbedHeight();