[InterNetNews/inn] d01724: innxbatch: Convert documentation to POD

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: d017245c6f3cc44f69473704912cc473a39666ff
      https://github.com/InterNetNews/inn/commit/d017245c6f3cc44f69473704912cc473a39666ff
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2021-11-20 (Sat, 20 Nov 2021)

  Changed paths:
    M MANIFEST
    M backends/innxbatch.c
    M backends/sendxbatches.in
    M doc/man/Makefile
    R doc/man/innxbatch.8
    M doc/pod/Makefile
    A doc/pod/innxbatch.pod

  Log Message:
  -----------
  innxbatch: Convert documentation to POD

Include documentation usage for sendxbatches within
the innxbatch man page.

Improve documentation at the same time.