[DOC] Explaining how Decoder works (#4437) #5

	---
	# github action to update AUTHORS.rst file if CITATION.cff is updated
	name: Update authors

	on:
	push:
	branches:
	- main

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	update_authors:
	if: github.repository == 'nilearn/nilearn'
	runs-on: ubuntu-latest
	steps:
	- name: Checkout nilearn
	uses: actions/checkout@v4

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.12'
	allow-prereleases: false

	- name: Install dependencies
	run: python -m pip install --upgrade pip ruamel.yaml

	- name: Update AUTHORS.rst and doc/changes/names.rst
	run: python maint_tools/citation_cff_maint.py

	- name: Create Pull Request
	uses: peter-evans/create-pull-request@v7
	with:
	commit-message: update AUTHORS.rst and doc/changes/names.rst
	base: main
	token: ${{ secrets.GITHUB_TOKEN }}
	delete-branch: true
	title: '[BOT] update AUTHORS.rst and doc/changes/names.rst'
	body: done via this [GitHub Action](https://github.com/${{ github.repository_owner }}/nilearn/blob/main/.github/workflows/update_authors.yml)

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