doc, tools: add doc linting to CI
Checklist
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commit message follows commit guidelines
Affected core subsystem(s)
doc, tools
Fixes: https://github.com/nodejs/node/issues/12635 Refs: https://github.com/nodejs/node/pull/12563
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
doc, tools
Fixes: https://github.com/nodejs/node/issues/12635 Refs: https://github.com/nodejs/node/pull/12563