Update pull-request.yml #3

	name: "Sphinx checks on pull-request"
	on:
	- push

	jobs:
	build_docs:
	runs-on: ubuntu-latest
	steps:
	- name: checkout source code
	uses: actions/checkout@v2
	- name: install sphinx
	run: pip3 install -U sphinx
	- name: install sphinxext-rediraffe
	run: pip3 install sphinxext-rediraffe
	- name: build docs
	run: sphinx-build -b html -E -W --keep-going . _build/html

	linkcheck:
	runs-on: ubuntu-latest
	steps:
	- name: checkout source code
	uses: actions/checkout@v2
	- name: install sphinx
	run: pip3 install -U sphinx
	- name: install sphinxext-rediraffe
	run: pip3 install sphinxext-rediraffe
	- name: check links
	run: make linkcheck

	rediraffecheck:
	runs-on: ubuntu-latest
	steps:
	- name: checkout source code
	uses: actions/checkout@v2
	with:
	fetch-depth: '0'
	- name: install sphinx
	run: pip3 install -U sphinx
	- name: install sphinxext-rediraffe
	run: pip3 install sphinxext-rediraffe
	- name: check redirects
	run: sphinx-build -b rediraffecheckdiff . _build/rediraffe

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