Bug 29456: Add Hold_Reminder description to patron categories overview page

This was missed when initially adding the notice.

To test:
- Go to Administraiton > patron categories
- Edit a patron category and check "Hold reminder" in messaging
  preferences, save.
- Go to the overview page and verify it shows as 'Unknown'.
- Apply patch.
- Descrpition should now display.

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

koha-tmpl/intranet-tmpl/prog/en/modules/admin/categories.tt

@@ -597,6 +597,7 @@
                                                 [% ELSIF ( prefs.Ill_ready ) %]Interlibrary loan ready
                                                 [% ELSIF ( prefs.Ill_unavailable ) %]Interlibrary loan unavailable
                                                 [% ELSIF ( prefs.Auto_Renewals ) %]Auto renewal
+                                                [% ELSIF ( prefs.Hold_Reminder ) %]Hold reminder
                                                 [% ELSE %]Unknown
                                                 [% END %]:
                                                 <strong>[% transport.transport | html %]</strong><br />