[InterNetNews/inn] c63dfc: Fix link to Pod::Parser

[Russ Allbery]

  Branch: refs/heads/2.7
  Home:   https://github.com/InterNetNews/inn
  Commit: c63dfc82b481c04d75eccee45bd28a3b8bc758a7
      https://github.com/InterNetNews/inn/commit/c63dfc82b481c04d75eccee45bd28a3b8bc758a7
  Author: Russ Allbery <eagle at eyrie.org>
  Date:   2023-05-13 (Sat, 13 May 2023)

  Changed paths:
    M doc/pod/hacking.pod

  Log Message:
  -----------
  Fix link to Pod::Parser