docs: add vercel build (#3290)

.github/workflows/deploy_docs.yml

@@ -21,6 +21,10 @@ concurrency:
   group: "pages"
   cancel-in-progress: false
 
+defaults:
+  run:
+    working-directory: docs
+
 jobs:
   get-changed-files:
     runs-on: ubuntu-latest
@@ -96,13 +100,13 @@ jobs:
               --check-links-ignore "https://python\.langchain\.com/.*" \
               --check-links-ignore "https://openai\.com/.*" \
               --check-links-ignore "https://pepy\.tech/.*" \
-              --check-links $(find docs/site -name "index.html" | grep -v 'storm/index.html') 
+              --check-links $(find site -name "index.html" | grep -v 'storm/index.html')
               
           else
             echo "Fetching changes from origin/main..."
             git fetch origin main
             echo "Checking for changed notebook files..."
-            CHANGED_FILES=$(git diff --name-only --diff-filter=d origin/main | grep 'docs/docs/.*\.ipynb$' | grep -v 'storm.ipynb' | sed -E 's|^docs/docs/|docs/site/|; s/\.ipynb$/\/index.html/' || true)
+            CHANGED_FILES=$(git diff --name-only --diff-filter=d origin/main | grep 'docs/docs/.*\.ipynb$' | grep -v 'storm.ipynb' | sed -E 's|^docs/docs/|site/|; s/\.ipynb$/\/index.html/' || true)
             echo "Changed files: ${CHANGED_FILES}"
             if [ -n "${CHANGED_FILES}" ]; then
               echo "Running link check on HTML files matching changed notebook files..."
@@ -130,7 +134,7 @@ jobs:
         if: github.ref == 'refs/heads/main'
         uses: actions/upload-pages-artifact@v3
         with:
-          path: ./docs/site/
+          path: ./site/
 
       - name: Deploy to GitHub Pages
         if: github.ref == 'refs/heads/main'