Build the static assets before generating markdown files

.github/workflows/gh-pages.yml

@@ -56,6 +56,7 @@ jobs:
           source .venv/bin/activate
           pip install -U poetry
           poetry run python openbb_platform/dev_install.py -e all
+          poetry run python -c "import openbb; openbb.build()"
           pip uninstall nbmake -y
           poetry run python website/generate_platform_v4_markdown.py