Update branchtest.yml

.github/workflows/branchtest.yml

@@ -29,7 +29,7 @@ jobs:
           repository: gravitl/netclient
           ref: develop
       - name: check if branch exists
-        id: checkbranch
+        id: getbranch
         run: |
           if git show-ref ${{ github.head_ref}}; then
             echo branch exists