Update README.md

Author: ctf0

README.md

@@ -21,7 +21,8 @@ return [
         'firebase'=> [
             'driver'=> 'firebase',
             'apiKey'=> env('FB_API_KEY'),
-            'databaseURL'=> env('FB_DB_URL'), // the real time database url'projectId'=> env('FB_PROJECT_ID'),
+            'databaseURL'=> env('FB_DB_URL'), // the real time database url
+            'projectId'=> env('FB_PROJECT_ID'),
             'creds_file'=> env('FB_CREDENTIALS_FILE'),
             'collection_name'=> env('FB_COLLECTION_NAME'), // ex.notifications
         ],