[geary] Add translation teams to THANKS as well

[Michael Gratton <mjog src gnome org>]

commit 3f41e86e7d08d78af29f78dad819816ada24b4a1
Author: Michael Gratton <mike vee net>
Date:   Thu Mar 7 14:53:50 2019 +1100

    Add translation teams to THANKS as well

 THANKS | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/THANKS b/THANKS
index b56910d5..b4bbc17a 100644
--- a/THANKS
+++ b/THANKS
@@ -1,4 +1,5 @@
-The Geary team would like to thank the following contributors:
+The Geary team would like to thank the following people and the GNOME
+translation teams for their contributions:
 
 Adam Dingle <adam medovina org>
 Adrien Plazas <kekun plazas laposte net>