[gucharmap] help: Fix broken Feedback link in 'About' section

[Andre Klapper <aklapper src gnome org>]

commit 1e83774d22d179194766e63f283875d6be93fcae
Author: Andre Klapper <a9016009 gmx de>
Date:   Thu Jan 2 23:42:06 2020 +0100

    help: Fix broken Feedback link in 'About' section

 help/C/index.docbook | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/help/C/index.docbook b/help/C/index.docbook
index 5e806f0e..68a5590f 100644
--- a/help/C/index.docbook
+++ b/help/C/index.docbook
@@ -125,7 +125,8 @@
 
     <legalnotice> 
       <title>Feedback</title> 
-      <para>To report a bug or make a suggestion regarding the <application>&app;</application> application 
or this manual, follow the directions in the <ulink url="help:gnome-feedback" type="help">GNOME Feedback 
Page</ulink>. 
+      <para>To report a bug or make a suggestion regarding the &app; application or this manual, visit
+      the <ulink url="https://gitlab.gnome.org/GNOME/gucharmap/issues/";>GNOME Issue Tracker</ulink>.
       </para>
 <!-- Translators may also add here feedback address for translations -->
     </legalnotice>