[InterNetNews/inn] 41a749: innxmit: Better document the -c flag

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 41a74912c4a22f9db47ef30346d2a7dca5753018
      https://github.com/InterNetNews/inn/commit/41a74912c4a22f9db47ef30346d2a7dca5753018
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2022-09-25 (Sun, 25 Sep 2022)

  Changed paths:
    M doc/pod/innxmit.pod

  Log Message:
  -----------
  innxmit: Better document the -c flag

It was not totally accurate, as by default innxmit also won't be sending
CHECK requests after a certain number of articles accepted in a row.
Document that behaviour.

Rewrap long lines in the POD file at the same time.