DEVELOPERS: change arnout's address

Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>
Signed-off-by: Julien Olivain <ju.o@free.fr>

DEVELOPERS

@@ -278,7 +278,7 @@ F:	package/espeak/
 N:	Arno Messiaen <arnomessiaen@gmail.com>
 F:	package/python-aiohttp-sse-client/
 
-N:	Arnout Vandecappelle <arnout@mind.be>
+N:	Arnout Vandecappelle <arnout@rnout.be>
 F:	package/arp-scan/
 F:	package/dehydrated/
 F:	package/dracut/