ci: fix changelog generator

Author: psastras

.github/workflows/main.yml

@@ -109,7 +109,7 @@ jobs:
       - name: changelog
         id: changelog
         run: |
-          CHANGELOG=$(nix develop --command git-cliff -c ${{ matrix.target }}/cliff.toml) --unreleased --tag ${{ matrix.target }}-v${{steps.targets.outputs.target_version}}
+          CHANGELOG=$(nix develop --command git-cliff -c ${{ matrix.target }}/cliff.toml --unreleased --tag ${{ matrix.target }}-v${{steps.targets.outputs.target_version}})
           echo ::set-output name=changelog::$CHANGELOG
       - uses: ncipollo/release-action@v1
         with: