[california] Application help: External link must be href, not xref

[Andre Klapper <aklapper src gnome org>]

commit 4f6ed9d95e6b8ff8b979be9d0114f52bb44e0023
Author: Andre Klapper <a9016009 gmx de>
Date:   Sun Sep 17 03:29:11 2017 +0200

    Application help: External link must be href, not xref

 help/C/legal.xml |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/legal.xml b/help/C/legal.xml
index 9050059..a6409d1 100644
--- a/help/C/legal.xml
+++ b/help/C/legal.xml
@@ -1,5 +1,5 @@
 <license xmlns="http://projectmallard.org/1.0/";>
 
-<p>This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. To view a 
copy of this license, visit <link 
xref="http://creativecommons.org/licenses/by-sa/3.0/";>http://creativecommons.org/licenses/by-sa/3.0/</link> 
or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.</p>
+<p>This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. To view a 
copy of this license, visit <link 
href="http://creativecommons.org/licenses/by-sa/3.0/";>http://creativecommons.org/licenses/by-sa/3.0/</link> 
or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.</p>
 </license>