Update docs' Dangerfile
What does this MR do?
Update danger bot for the docs:
- Assign the MR to a tech writer instead of simply mentioning them (so we don't miss reviews in our todos list)
- Add development guidelines to Marcia's review area - this came up on Slack and I'm happy to take it if that's okay (cc/ @mikelewis)
cc/ @eread
Does this MR meet the acceptance criteria?
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Changelog entry added, if necessary -
Documentation created/updated -
Tests added for this feature/bug -
Conforms to the code review guidelines -
Conforms to the merge request performance guidelines -
Conforms to the style guides -
Conforms to the database guides -
Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process. -
Security reports checked/validated by reviewer