feat: add negative tests for annotation syntax in nt #806

	# This workflow validates the document for markup and examples.
	name: CI

	on:
	push:
	branches: [ '**' ]
	pull_request:
	branches: [ main ]

	jobs:
	tests:
	name: Build and Validate Spec
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2

	# Setup python environment
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: '3.x'

	# Setup Ruby environment
	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: 2.7

	- name: Install Gemfile bundles
	run: bundle install --jobs 4 --retry 3

	- name: Build test manifests
	run: (cd tests; make)

	- name: Build implementation report
	run: (cd reports; bundle exec rake clean default)

	# Validate via ReSpec
	# See https://github.com/w3c/spec-prod/blob/main/docs/examples.md
	- name: ReSpec Checker
	uses: w3c/spec-prod@v2
	with:
	TOOLCHAIN: respec
	SOURCE: cg-spec/editors_draft.html
	VALIDATE_LINKS: false
	VALIDATE_MARKUP: true

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