docs: Fix `mdpo` URL in README.md #232

	name: Documentation

	on:
	push:
	branches:
	- master
	tags:
	- v*
	pull_request:
	workflow_dispatch:

	jobs:
	build:
	name: Documentation build
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Set up Python v3.7
	uses: actions/setup-python@v2
	with:
	python-version: 3.7
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip wheel
	python -m pip install .[doc]
	pip list
	- name: Show documentation configuration
	run: cat mkdocs.yml
	- name: Test documentation build
	run: \|
	python -m mkdocs build --strict
	- name: Show tree
	run: tree site

Provide feedback