Typo, wrong ref name.

Author: jum

.github/workflows/build.yaml

@@ -27,7 +27,7 @@ jobs:
       - name: Set caddy version
         id: caddy_version
         run: |
-          if test $CI_REF_NAME_SLUG == develop; then echo "::set-output name=version::master"; else echo "::set-output name=version::laest"; fi
+          if test ${{ github.ref_name }} == develop; then echo "::set-output name=version::master"; else echo "::set-output name=version::latest"; fi
       - name: Build and push
         uses: docker/build-push-action@v5
         with: