[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/flavours/glitch/features/compose/util/counter.js

@@ -6,4 +6,4 @@ export function countableText(inputText) {
   return inputText
     .replace(urlRegex, urlPlaceholder)
     .replace(/(^|[^\/\w])@(([a-z0-9_]+)@[a-z0-9\.\-]+[a-z0-9]+)/ig, '$1@$3');
-};
+}