Better naming (#3486)

lib/plugins/budget/verify.js

@@ -131,7 +131,10 @@ module.exports = {
               log.error(`Could not find the user timing ${metric}`);
               continue;
             }
-          } else if (metricType === 'extras' && tool === 'browsertime') {
+          } else if (
+            metricType === 'scriptingmetrics' &&
+            tool === 'browsertime'
+          ) {
             const budgetValue = budgetForThisURL[metricType][metric];
             const value = get(
               message.data,
@@ -154,7 +157,7 @@ module.exports = {
               }
               continue;
             } else {
-              log.error(`Could not find the extra metric ${metric}`);
+              log.error(`Could not find the scripting metric ${metric}`);
               continue;
             }
           }