This updates the remaining stale auth hook references after the auth
hooks guide moved from hash anchors to dedicated subpages.
It switches the RBAC guide to the current custom access token hook page,
updates the MFA verification hook reference in both the docs error-code
source and the shared-data export, and fixes the matching custom access
token hook comments in the Slack Clone SQL examples.
Testing: not run. Link-target updates only.
Refs #46947
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## Summary by CodeRabbit
## Release Notes
* **Documentation**
* Updated error code and auth hook documentation reference links to
point to more specific canonical documentation pages, improving accuracy
of references for developers.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
* refactor(docs): turn auth error codes table into data file
Take the Markdown error codes table and turn it into a data file
instead. This makes it easy to parse and reuse in other places besides
Markdown documents.
* Update apps/docs/content/errorCodes/authErrorCodes.toml
Co-authored-by: Terry Sutton <saltcod@gmail.com>
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Co-authored-by: Terry Sutton <saltcod@gmail.com>