[Perl/perl5] 5d164a: say that `ord` returns code points

[Karl Williamson via perl5-changes]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 5d164ace56ff5a75d850659571211e63e80469f4
      
https://github.com/Perl/perl5/commit/5d164ace56ff5a75d850659571211e63e80469f4
  Author: Gianni Ceccarelli <gceccare...@veritone.com>
  Date:   2023-09-28 (Thu, 28 Sep 2023)

  Changed paths:
    M pod/perlfunc.pod

  Log Message:
  -----------
  say that `ord` returns code points

all the other uses of "numeric value" are in the `atoi` sense, where
"numeric value" of '1' is 1, but `ord('1')` is 49; "code point" is
more correct/precise, and already used in many places