Update Gtihub action badge to point to main branch #321

	name: Build documentation

	on: push

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	- name: Install Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	cache: "pip"
	cache-dependency-path: \|
	doc/requirements_doc.txt

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	python -m pip install -r requirements.txt
	python -m pip install git+https://github.com/tensorly/tensorly-sphinx-theme.git@main
	python -m pip install -r doc/requirements_doc.txt
	- name: Install package
	run: \|
	python -m pip install -e .
	- name: Make doc
	run: \|
	cd doc
	python minify.py
	make html
	cd ..
	- name: Push doc to website
	if: success() && github.ref == 'refs/heads/main'
	run: \|
	# Add deploy key and clone through ssh
	eval "$(ssh-agent -s)"
	mkdir ~/.ssh
	echo "${{ secrets.DEPLOY_DOC_KEY }}" > ~/.ssh/id_rsa
	chmod 600 ~/.ssh/id_rsa
	ssh-keyscan -t rsa github.com
	echo 'Documentation was successfully built, updating the website.'
	# See https://github.saobby.my.eu.orgmunity/t/github-actions-bot-email-address/17204/5
	git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
	git config --global user.name "github-actions"
	git clone "git@github.com:tensorly/tensorly.github.io.git" doc_folder
	echo "-- Updating the content"
	cd doc_folder
	git rm -r dev/*
	mkdir -p dev
	echo "Copying to folder"
	cp -r ../doc/_build/html/* dev/
	echo "Pushing to git"
	git add dev
	git commit -m "Github action: auto-update."
	git push --force origin main

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