Try switch to use Powershell with windows 2022.

Author: Layoric

.github/workflows/static.yml

@@ -47,7 +47,7 @@ jobs:
         run: |
           Expand-Archive ./docfx.zip -d ./docfx
           ./docfx/docfx.exe --version
-          echo "${GITHUB_WORKSPACE}/docfx" >> $GITHUB_PATH
+          echo "%GITHUB_WORKSPACE%/docfx" >> $GITHUB_PATH
       - name: Checkout DocFxMarkdownGen
         uses: actions/checkout@v3
         with: