Fix hugo version

Author: ThisIsMissEm

.github/workflows/publish.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Setup Hugo
         uses: peaceiris/actions-hugo@v3
         with:
-          hugo-version: "$HUGO_VERSION"
+          hugo-version: ${{ vars.HUGO_VERSION }}
           extended: true
       - uses: actions/setup-node@v4
         with: