[wiki] [sites] Correct name: Matthias Andrée to Mattias Andrée || Mattias Andrée

[git]

commit 7960d38aa055adfc356a5bc37ee05aa7771a5ad3
Author: Mattias Andrée <maand...@kth.se>
Date:   Sun Oct 6 23:54:35 2019 +0200

    Correct name: Matthias Andrée to Mattias Andrée
    
    Signed-off-by: Mattias Andrée <maand...@kth.se>

diff --git a/suckless.org/conferences/2019/index.md 
b/suckless.org/conferences/2019/index.md
index 1281b88e..510d6cb2 100644
--- a/suckless.org/conferences/2019/index.md
+++ b/suckless.org/conferences/2019/index.md
@@ -78,7 +78,7 @@ Sunday, 2019-10-06
 
 ### (10:00-12:00) Talk sessions
 
-#### Blind demonstration, Matthias Andrée
+#### Blind demonstration, Mattias Andrée
 
 A demonstration of the blind video editor.