Documentation of FOR ROLE clause of ALTER DEFAULT PRIVILEGES missing

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/10/static/sql-alterdefaultprivileges.html
Description:

The documentation of ALTER DEFAULT PRIVILEGES statements seems to lack an
elaboration of the FOR ROLE clause.

It specifies what restrictions exist (namely "The name of an existing role
of which the current role is a member."), but what the specified role is
actually used for remains a mystery.

The documentation should read something like: "The default permissions are
only granted on objects created by this role."