fix determine-config-name step

.github/workflows/draft-release.yml

@@ -33,7 +33,7 @@ jobs:
         id: determine-config-name
         run: |
           BRANCH_NAME="${{ github.ref_name }}"
-          BRANCH_NAME_REPLACED="${branch_name//\//\-}"
+          BRANCH_NAME_REPLACED=${BRANCH_NAME/\//-}
           echo "value=release-drafter-${BRANCH_NAME_REPLACED.yml" >> $GITHUB_OUTPUT
 
       - uses: release-drafter/release-drafter@v5