Use latest version of docfx

.github/workflows/tag_docs.yml

@@ -37,7 +37,7 @@ jobs:
       - name: Install DocFX
         uses: crazy-max/ghaction-chocolatey@v1
         with:
-          args: install docfx --version 2.48 -y
+          args: install docfx -y
       - name: Checkout current pages
         uses: actions/checkout@v2
         with: