Fix linter

Author: alex-friedl

src/sendFCM.js

@@ -67,7 +67,7 @@ const sendFCM = (regIds, data, settings) => {
   const opts = {
     credential:
       settings.fcm.credential || firebaseAdmin.credential.cert(settings.fcm.serviceAccountKey),
-    httpAgent: settings.fcm.httpAgent || undefined
+    httpAgent: settings.fcm.httpAgent || undefined,
   };
 
   const firebaseApp = firebaseAdmin.initializeApp(opts, appName);