docs: add docs on proto annotations #3128

	name: Build Docs
	# This workflow runs when a PR is labeled with `docs`
	# This will check if the docs build successfully by running `make build-docs`
	on:
	pull_request:
	branches:
	- main
	- "release/**"
	paths:
	- "docs/**"
	- "x/*/.md"
	- .github/workflows/deploy-docs.yml
	- .github/workflows/build-docs.yml

	permissions:
	contents: read

	jobs:
	check-docs-build:
	name: Check docs build
	runs-on: ubuntu-latest
	steps:
	- name: Checkout 🛎️
	uses: actions/checkout@v4
	with:
	persist-credentials: false
	fetch-depth: 0

	- name: Setup Node.js 🔧
	uses: actions/setup-node@v3
	with:
	node-version: "16.x"

	# npm install npm should be removed when https://github.com/npm/cli/issues/4942 is fixed
	- name: Build docs 🔧
	run: \|
	npm install -g [email protected]
	make build-docs

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