use env directly

Author: Siddhant Agarwal

.github/workflows/dummy.yml

@@ -10,10 +10,8 @@ jobs:
         run: echo hi
       - name: Update status to pending
         uses: geekodour/[email protected]
-        env:
-          BRANCH: ${{github.ref#refs/heads/}}
         with:
           args: >-
             --state=success
             --context=deploy-preview
-            --target_url=https://betasite.razorpay.com/docs/razorpay/${BRANCH}
+            --target_url=https://betasite.razorpay.com/docs/razorpay/${GITHUB_REF#refs/heads/}