[guadec-web] Update visa.md

[Kat <kat src gnome org>]

commit 11db98cb4fb09a53f05f217a785fc06a2ce1d3b1
Author: Kat <kittykat3756 gmail com>
Date:   Tue Jun 5 12:36:09 2018 +0000

    Update visa.md
    
    Improve visa letter info

 content/pages/visa.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/content/pages/visa.md b/content/pages/visa.md
index 15845e6..bf2d830 100644
--- a/content/pages/visa.md
+++ b/content/pages/visa.md
@@ -106,7 +106,9 @@ In case you are interested (and could read Spanish) the procedure is regulated b
 
 ## Asking for a GUADEC invitation letter
 
-You should follow the procedure provided at [Instructions for Requesting an Invitation 
Letter](https://wiki.gnome.org/action/login/Travel/Invitations) at the GNOME wiki. When sending the email to  
travel-invitations-committee add CC:olea gnome org.
+You should follow this process:
+[Instructions for Requesting an Invitation Letter](https://wiki.gnome.org/GUADEC/2018/Visa%20invitations)
+on the GNOME wiki.
 
 ## Asking for the accommodation document