Add 410: Gone error code to documentation - #3707

Add '410: Gone' to the list of error codes.

Summary

• The Gone error (410) is available in @feathersjs/errors, but is currently missing from the list of error codes in the API documentation.
• It was added in Add 410 Gone to errors #1849
• The Feathers source defines and exports the Gone error and maps it to HTTP status code 410.
• This PR adds 410: Gone to the documentation so that the documented error types match the available Feathers error types.
• There are no related issues or any dependent PRs.

Other Information

• This is just a document-only change, no code or behavior is changed or affected.