fix format

Author: yuhengshs

.github/integ-config/integ-all.yml

@@ -507,7 +507,7 @@ tests:
     sample_name: [auth-ssr]
     spec: auth-ssr
     browser: [chrome]
-	  backend_name: sign-in-with-email
+    backend_name: sign-in-with-email
   - test_name: integ_next_auth_authenticator_and_rsc_page
     desc: 'Authenticator and RSC page'
     framework: next