DEVELOPERS: Update email address for Bernd Kuhls

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 8ef7b2069dd6462508c3c61373fe2802761c4d63)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

DEVELOPERS

@@ -311,7 +311,7 @@ F:	package/taskd/
 N:	Benjamin Kamath <kamath.ben@gmail.com>
 F:	package/lapack/
 
-N:	Bernd Kuhls <bernd.kuhls@t-online.de>
+N:	Bernd Kuhls <bernd@kuhls.net>
 F:	package/alsa-lib/
 F:	package/alsa-utils/
 F:	package/apache/