BUG #16253: Documentation bug https://www.postgresql.org/docs/12/auth-methods.html

The following bug has been logged on the website:

Bug reference:      16253
Logged by:          Regina Obe
Email address:      r@pcorp.us
PostgreSQL version: 12.1
Operating system:   Not relevant
Description:

On the PostgreSQL 12 page of the auth-methods -
https://www.postgresql.org/docs/12/auth-methods.html , it doesn't list a
index of pages to the different auth methods.

I assume this is unintentional since even the development version of the
docs offers links and brief title for each method.

https://www.postgresql.org/docs/devel/auth-methods.html