Adding migration to rename 'housing'... to 'housing-local-services'...

Renaming the tag 'housing' to 'housing-local-services' so 'housing' can be reused as a topic.

There is a Whitehall PR for retagging detailed guides (https://github.com/alphagov/whitehall/pull/1796) and a Router-data PR (https://github.gds/gds/router-data/pull/198) for redirecting the browse categories.
Not that I'm aware of. 
How much of an issue is this? If we can't update archived artefacts at present anyway, then would this have a noticeable effect in the future? (especially with the upcoming transition to the content store and 'all the things' app)