Merge pull request #4694 from hamirmahal/fix/warning-for-set-output

fix: warning for `set-output` command

Author: weiznich

.github/workflows/doc.yml

@@ -27,7 +27,7 @@ jobs:
         id: current_branch
         shell: bash
         run: |
-          echo "##[set-output name=branch;]$(echo ${GITHUB_REF#refs/heads/})"
+          echo "branch=$(echo ${GITHUB_REF#refs/heads/})" >> $GITHUB_OUTPUT
       - uses: dtolnay/rust-toolchain@nightly
       - name: Install dependencies
         run: |