apparmor: update MAINTAINERS file git and wiki locations

The apparmor information in the MAINTAINERS file is out of date
update it to the correct git reference for the master apparmor tree.

And update the wiki location to use apparmor.net which forwards to
the current wiki location on gitlab.com.
Signed-off-by: John Johansen <john.johansen@canonical.com>

MAINTAINERS

@@ -915,8 +915,8 @@ F:	drivers/char/apm-emulation.c
 APPARMOR SECURITY MODULE
 M:	John Johansen <john.johansen@canonical.com>
 L:	apparmor@lists.ubuntu.com (subscribers-only, general discussion)
-W:	apparmor.wiki.kernel.org
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/jj/apparmor-dev.git
+W:	wiki.apparmor.net
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor
 S:	Supported
 F:	security/apparmor/
 F:	Documentation/admin-guide/LSM/apparmor.rst