doc: update manpage footer for GitLab and remove static list of maintainers

The list of all maintainers that have worked so far on devtools is
exceeding a sane amount making each manpage convulsed. The authors can
be pulled from GitLab directly without occupying lots of space on every
manpage. We would like to express gratitude to all our maintainers.

Signed-off-by: Levente Polyak <anthraxx@archlinux.org>

doc/man/include/footer.asciidoc

@@ -1,27 +1,7 @@
 
-Bugs
-----
-Bugs can be reported on the project's GitLab bug tracker 'https://gitlab.archlinux.org/archlinux/devtools'
+Homepage
+--------
 
+'https://gitlab.archlinux.org/archlinux/devtools'
 
-Authors
--------
-
-Maintainers:
-
-* Aaron Griffin <aaronmgriffin@gmail.com>
-* Allan McRae <allan@archlinux.org>
-* Bartłomiej Piotrowski <bpiotrowski@archlinux.org>
-* Dan McGee <dan@archlinux.org>
-* Dave Reisner <dreisner@archlinux.org>
-* Evangelos Foutras <evangelos@foutrelis.com>
-* Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
-* Jelle van der Waa <jelle@archlinux.org>
-* Levente Polyak <anthraxx@archlinux.org>
-* Pierre Schmitz <pierre@archlinux.de>
-* Sébastien Luttringer <seblu@seblu.net>
-* Sven-Hendrik Haase <svenstaro@gmail.com>
-* Thomas Bächler <thomas@archlinux.org>
-
-For additional contributors, use `git shortlog -s` on the devtools.git
-repository.
+Please report bugs and feature requests in the issue tracker. Please do your best to provide a reproducible test case for bugs.