MAINTAINERS: Fix typo in email address

Fix a typo in one of the copies of Aurelien Jarno's email address.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

MAINTAINERS

@@ -480,7 +480,7 @@ S: Maintained
 F: tcg/ia64/
 
 MIPS target
-M: Aurelien Jarno <aurelien@aurel32.ne>
+M: Aurelien Jarno <aurelien@aurel32.net>
 S: Maintained
 F: tcg/mips/