MAINTAINERS: Update email for Allison Henderson

Switch active email address to kernel.org alias

Signed-off-by: Allison Henderson <achender@kernel.org>
Link: https://patch.msgid.link/20260402005833.38376-1-achender@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: Allison Henderson

MAINTAINERS

@@ -22129,7 +22129,7 @@ S:	Supported
 F:	drivers/infiniband/sw/rdmavt
 
 RDS - RELIABLE DATAGRAM SOCKETS
-M:	Allison Henderson <allison.henderson@oracle.com>
+M:	Allison Henderson <achender@kernel.org>
 L:	netdev@vger.kernel.org
 L:	linux-rdma@vger.kernel.org
 L:	rds-devel@oss.oracle.com (moderated for non-subscribers)