chore: fix examples (#83)

Author: haizaar

modules/gh-oidc/README.md

@@ -57,9 +57,9 @@ jobs:
       with:
         workload_identity_provider: ${{ secrets.PROVIDER_NAME }} # this is the output provider_name from the TF module
         service_account: ${{ secrets.SA_EMAIL }} # this is a SA email configured using the TF module with access to YOUR-GCS-BUCKET
-    - id: 'list buckets contents'
+    - id: 'list-buckets-contents'
       run: |-
-        curl https://storage.googleapis.com/storage/v1/b/YOUR-GCS-BUCKET/o \
+        curl -sSf https://storage.googleapis.com/storage/v1/b/YOUR-GCS-BUCKET/o \
           --header "Authorization: Bearer ${{ steps.auth.outputs.access_token }}"
 ```