HTML dev docs (#15678)

Co-authored-by: Pierric Cistac <Pierrci@users.noreply.github.com>

.github/workflows/build_documentation.yml

@@ -15,6 +15,15 @@ jobs:
         shell: bash -l {0}
 
     steps:
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '14'
+
+       - uses: actions/checkout@v2
+        with:
+          repository: 'huggingface/doc-builder'
+          path: doc-builder
+
       - uses: actions/checkout@v2
         with:
           repository: 'huggingface/doc-build'
@@ -77,7 +86,9 @@ jobs:
 
       - name: Make documentation
         run: |
-          doc-builder build transformers transformers/docs/source --build_dir doc-build --notebook_dir notebooks/transformers_doc --clean
+          cd doc-builder
+          doc-builder build transformers ../transformers/docs/source --build_dir ../doc-build --notebook_dir notebooks/transformers_doc --clean --html
+          cd ..
 
       - name: Push to repositories
         run: |