LC_COLLATE is visible in the documentation for PostgreSQL 17, but it is not supported - Mailing list pgsql-docs

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/17/sql-show.html
Description:

On the docs page for SHOW
(https://www.postgresql.org/docs/17/sql-show.html), LC_COLLATE is listed as
a parameter which can be shown, but trying to run SHOW LC_COLLATE on PG 17
results in the following:

ERROR: unrecognized configuration parameter "lc_collate"

And according to Laurenz it has been removed in PostgreSQL 16 already:
https://stackoverflow.com/a/77979710/2323727

I've never contributed to the docs, but I'm open to making the change if
needed (I just need to figure out how, first).

Thanks for the great docs
Ian