update if syntax

Author: jorgecotillo

.github/workflows/main.yml

@@ -33,7 +33,7 @@ jobs:
     needs: build
     env:
       PR_PREFIX: sdkAuto/
-    if: ${{ contains(github.actor, 'openapi-sdkautomation') && startsWith(github.head_ref, $PR_PREFIX) }}
+    if: ${{ github.actor == 'openapi-sdkautomation' }} && startsWith(github.head_ref, $PR_PREFIX)
     steps:
       - uses: actions/checkout@v2