doc: ReSTify Smack.txt

Adjusts for ReST markup and moves under LSM admin guide.
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/admin-guide/LSM/index.rst

@@ -36,5 +36,6 @@ the one "major" module (e.g. SELinux) if there is one configured.
    apparmor
    LoadPin
    SELinux
+   Smack
    tomoyo
    Yama

Documentation/security/00-INDEX

 00-INDEX
 	- this file.
-Smack.txt
-	- documentation on the Smack Linux Security Module.
 keys-ecryptfs.txt
 	- description of the encryption keys for the ecryptfs filesystem.
 keys-request-key.txt

MAINTAINERS

@@ -11876,7 +11876,7 @@ L:	linux-security-module@vger.kernel.org
 W:	http://schaufler-ca.com
 T:	git git://github.com/cschaufler/smack-next
 S:	Maintained
-F:	Documentation/security/Smack.txt
+F:	Documentation/admin-guide/LSM/Smack.rst
 F:	security/smack/
 
 DRIVERS FOR ADAPTIVE VOLTAGE SCALING (AVS)