Update index.md (#4149) #36

	name: Publish documentation

	# publish the documentation on every merge to develop branch
	on:
	push:
	branches:
	- develop
	paths:
	- docs/mkdocs/**
	- docs/examples/**
	workflow_dispatch:

	permissions:
	contents: read

	# we don't want to have concurrent jobs, and we don't want to cancel running jobs to avoid broken publications
	concurrency:
	group: documentation
	cancel-in-progress: false

	jobs:
	publish_documentation:
	if: github.repository == 'nlohmann/json'
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v3

	- name: Install and update PlantUML
	run: sudo apt-get update ; sudo apt-get install -y plantuml

	- name: Install virtual environment
	run: make install_venv -C docs/mkdocs

	- name: Publish documentation
	run: make publish -C docs/mkdocs

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