DEVELOPERS: update email for Titouan Christophe

Signed-off-by: Titouan Christophe <titouan.christophe@mind.be>
Signed-off-by: Julien Olivain <ju.o@free.fr>

DEVELOPERS

@@ -3291,7 +3291,7 @@ F:	toolchain/
 N:	Timo Ketola <timo.ketola@exertus.fi>
 F:	package/fbgrab/
 
-N:	Titouan Christophe <titouanchristophe@gmail.com>
+N:	Titouan Christophe <titouan.christophe@mind.be>
 F:	package/avro-c/
 F:	package/mosquitto/
 F:	package/python-avro/