Re-enable manual broken-link check

Author: prrao87

.github/workflows/docs-ci.yml

@@ -33,3 +33,16 @@ jobs:
           test -s lance-namespace/docs/src/rest.yaml
           cp lance-namespace/docs/src/rest.yaml docs/api-reference/rest/openapi.yml
 
+      - name: Install Mintlify CLI
+        run: npm install -g mintlify@latest
+
+      - name: Check broken links
+        run: |
+          set -euo pipefail
+          if command -v mint >/dev/null 2>&1; then
+            (cd docs && mint broken-links)
+          elif command -v mintlify >/dev/null 2>&1; then
+            (cd docs && mintlify broken-links)
+          else
+            (cd docs && npx -y mintlify@latest broken-links)
+          fi