* Simple replacements of doc.zebra.zfnd.org with docs.rs
* Manual fixes for specific main/internal/external docs
* Point developer docs to doc-internal.zebra.zfnd.org
* fastmod --glob '\!.git' -- doc.zebra.zfnd.org/zebrad docs.rs/zebrad/latest/zebrad
* Manually remove any remaining doc.zfnd.zebra.org links
* Remove the external docs job
* Add changelog entry and fix links
* Fix links that were broken before this PR