Improve README #184

	name: fuzzing

	# This action runs fuzzing for a brief period of time,
	# only aginst the actual code added in the PR.
	# It is intended a relatively quick check,
	# to guard against code introducing crashes in the Markdown parsing,
	# which should in principle always run against any text input.
	# See: https://google.github.io/oss-fuzz/getting-started/continuous-integration/#how-it-works
	# Note, to reproduce a crash locally, copy to `testcase` file` and run: `tox -e fuzz`

	on:
	pull_request:
	paths-ignore: ['docs/', 'tests/']

	jobs:
	Fuzzing:
	runs-on: ubuntu-latest
	steps:
	- name: Build Fuzzers
	id: build
	uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
	with:
	oss-fuzz-project-name: 'markdown-it-py'
	language: python
	- name: Run Fuzzers
	uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
	with:
	oss-fuzz-project-name: 'markdown-it-py'
	language: python
	fuzz-seconds: 60
	- name: Upload Crash
	uses: actions/upload-artifact@v3
	if: failure() && steps.build.outcome == 'success'
	with:
	name: artifacts
	path: ./out/artifacts

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