Update README.md

Author: ctf0

README.md

@@ -19,10 +19,10 @@ return [
         // ...
 
         'firebase' => [
-            'driver' => 'firebase',
-            'type' => 'firestore', // database or firestore
-            'databaseURL' => env('FB_DB_URL'), // the real time database url
-            'creds_file' => env('FB_CREDENTIALS_FILE'), // service account json file
+            'driver'          => 'firebase',
+            'type'            => 'firestore', // database or firestore
+            'databaseURL'     => env('FB_DB_URL'), // the real time database url
+            'creds_file'      => env('FB_CREDENTIALS_FILE'), // service account json file
             'collection_name' => env('FB_COLLECTION_NAME'), // ex.notifications
         ],
     ],