Update event label and value name (#6421)

src/components/Layout/Feedback.tsx

@@ -45,14 +45,15 @@ const thumbsDownIcon = (
 );
 
 function sendGAEvent(isPositive: boolean) {
+  const category = isPositive ? 'like_button' : 'dislike_button';
   const value = isPositive ? 1 : 0;
   // Fragile. Don't change unless you've tested the network payload
   // and verified that the right events actually show up in GA.
   // @ts-ignore
   gtag('event', 'feedback', {
-    event_category: 'button',
+    event_category: category,
     event_label: window.location.pathname,
-    value,
+    event_value: value,
   });
 }