ci: correct build_iceberg.sh arg comment in SigV4 job

Author: mmaslankaprv

.github/workflows/sigv4_rest_test.yml

@@ -57,7 +57,7 @@ jobs:
         uses: mozilla-actions/sccache-action@9e7fa8a12102821edf02ca5dbea1acd0f89a2696 # v0.0.10
       - name: Build and test Iceberg (SigV4 ON, S3 OFF, bundled AWS SDK)
         shell: bash
-        # build_iceberg.sh args: <dir> <sanitizer> <run-tests> <s3> <sigv4> <bundle_awssdk>
+        # build_iceberg.sh args: <dir> <rest_integration_tests> <sccache> <s3> <sigv4> <bundle_awssdk>
         run: ci/scripts/build_iceberg.sh "$(pwd)" OFF ON OFF ON ON
       - name: Show sccache stats
         shell: bash