[gnome-chess] help: Fix markup

[Andre Klapper <aklapper src gnome org>]

commit 439a80e694d796391be951259e999d0399f89522
Author: Andre Klapper <a9016009 gmx de>
Date:   Wed Sep 5 10:38:55 2018 +0200

    help: Fix markup

 help/C/change-look-feel.page | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/help/C/change-look-feel.page b/help/C/change-look-feel.page
index 4d2bdb4..c8278b7 100644
--- a/help/C/change-look-feel.page
+++ b/help/C/change-look-feel.page
@@ -6,7 +6,6 @@
     <revision version="0.1" date="2011-12-10" status="stub"/>
     <revision pkgversion="3.28" version="0.2" date="2018-09-05" status="review"/>
 
-    <credit type="author copyright">
     <credit type="author">
       <name>Andre Klapper</name>
       <email>ak-47 gmx net</email>