Bug 42430: (follow-up) Add missing POD

Signed-off-by: Martin Renvoize <martin.renvoize@openfifth.co.uk>
Signed-off-by: Pedro Amorim <pedro.amorim@openfifth.co.uk>

Koha/Plugins.pm

@@ -134,6 +134,12 @@ sub get_enabled_plugins {
     return Koha::Plugins::Loader->get_enabled_plugins();
 }
 
+=head3 _verbose
+
+Helper function to reduce verbosity in tests
+
+=cut
+
 sub _verbose {
     my $class = shift;
 
@@ -414,6 +420,13 @@ sub RemovePlugins {
     $class->_restart_after_change();
 }
 
+=head3 _restart_after_change
+
+Helper function to reload plack after a plugin change if the
+'plugins_restart' flag is enabled in the koha-conf.xml
+
+=cut
+
 sub _restart_after_change {
     my ( $class, $params ) = @_;