fix stable version release to match correct release name

Signed-off-by: Ankur Kothiwal <[email protected]>

.github/workflows/stable-version-release.yml

@@ -22,7 +22,7 @@ jobs:
         id: match
         run: |
             value=`cat STABLE-RELEASE`
-            if [ ${{ github.ref }} == $value ]; then
+            if [ ${{ github.ref }} == refs/heads/$value ]; then
               docker pull docker.io/kubearmor/kubearmor:$value
               docker image tag kubearmor/kubearmor:$value kubearmor/kubearmor:stable
               echo ::set-output name=tag::true