[gnome-user-docs] Fix error caused by validation fix: net-email

[Michael Hill <mdhill src gnome org>]

commit a831b427625d8ec053dec3146d8e07b7cbcc6d1f
Author: Michael Hill <mdhill gnome org>
Date:   Wed Sep 30 10:16:07 2015 -0400

    Fix error caused by validation fix: net-email

 gnome-help/C/net-email.page |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gnome-help/C/net-email.page b/gnome-help/C/net-email.page
index 727ef2f..4a61f8a 100644
--- a/gnome-help/C/net-email.page
+++ b/gnome-help/C/net-email.page
@@ -24,7 +24,7 @@
 
     <desc>
       <link xref="net-default-email">Default email apps</link>,
-      <link xref="net-email-virus">Should I scan for viruses</link>…
+      <link xref="net-email-virus">Should I scan for viruses?</link>…
     </desc>
   </info>