MAINTAINERS: Update my email address

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

Author: amschuma-ntap

MAINTAINERS

@@ -13566,7 +13566,7 @@ F:	tools/testing/selftests/nci/
 
 NFS, SUNRPC, AND LOCKD CLIENTS
 M:	Trond Myklebust <trond.myklebust@hammerspace.com>
-M:	Anna Schumaker <anna.schumaker@netapp.com>
+M:	Anna Schumaker <anna@kernel.org>
 L:	linux-nfs@vger.kernel.org
 S:	Maintained
 W:	http://client.linux-nfs.org