fix: ci/cd badge

.github/workflows/docker_img.yml

@@ -229,7 +229,7 @@ jobs:
           -H 'accept: application/vnd.github.v3+json' \
           ${GITHUB_API_ROOT}/statuses/${GITHUB_SHA} \
           -d '{
-            "target_url":"'${{ env.DEPLOY_URL }}'",
+            "target_url":"${{ env.DEPLOY_URL }}",
             "name": "Deployed at OKD",
             "description": "Deployed at OKD",
             "context": "[ebrains-okd-deploy] Deployed at OKD",