docs: add `Using gnokey` tutorial #192

	name: "docs / lint"

	on:
	push:
	paths:
	- master
	pull_request:
	paths:
	- "docs/**"

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: '1.22'

	- name: Install dependencies
	run: go mod download

	- name: Build docs
	run: make -C docs/ build

	- name: Check diff
	run: git diff --exit-code \|\| (echo "Some docs files are not formatted, please run 'make build'." && exit 1)

	- name: Run linter
	run: make -C docs/ lint

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