Improve perlpod formatting for multiple plugins

Escpecially the final marker ("=cut") was missing in these plugins.

plugins/git/gitlab_statistics

@@ -8,7 +8,7 @@ Plugin to monitor Gitlab status
 
 =head1 INSTALLATION
 
-Usage: Place in /etc/munin/plugins/ (or link it there using ln -s)
+Place in /etc/munin/plugins/ (or link it there using ln -s)
 
 =head1 CONFIGURATION
 
@@ -23,23 +23,17 @@ Add this to your /etc/munin/plugin-conf.d/munin-node:
 
 =back
 
-=head1 HISTORY
+=head1 AUTHORS
 
-2019-10-02: v 1.0 pcy <pcy.ulyssis.org>: created
-
-=head1 USAGE
-
-Parameters understood:
-
-  config   (required)
-  autoconf (optional - used by munin-config)
+Copyright (C) 2019 pcy <pcy.ulyssis.org>
 
 =head1 MAGIC MARKERS
 
-#%# family=auto
-#%# capabilities=autoconf
-"""
+ #%# family=auto
+ #%# capabilities=autoconf
 
+=cut
+"""
 
 import os
 import json