fix #54: root all image urls

Jacky Zhao

2022-02-16 f192f9a23df34d30e223e20ab5e8cb8210a7dfe9

 .github/workflows/deploy.yaml

@@ -16,7 +16,7 @@
        with:
          index: true
          input: content
          output: data
          output: static

      - name: Setup Hugo
        uses: peaceiris/actions-hugo@v2