add sphinx_rtd_theme to sphinx workflow #2

	name: "Sphinx: Render docs"

	on: push

	jobs:
	build:
	runs-on: ubuntu-latest
	permissions:
	contents: write
	steps:
	- uses: actions/checkout@v4
	- name: Set up Conda
	uses: conda-incubator/setup-miniconda@v2
	with:
	auto-activate-base: true
	- name: Install dependencies
	run: conda install -y sphinx_rtd_theme
	- name: Build HTML
	uses: ammaraskar/sphinx-action@master
	- name: Upload artifacts
	uses: actions/upload-artifact@v4
	with:
	name: html-docs
	path: docs/build/html/
	- name: Deploy
	uses: peaceiris/actions-gh-pages@v3
	if: github.ref == 'refs/heads/main'
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: docs/build/html

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