security: fix LSM description location

Acked-by: Kees Cook <keescook@chromium.org>

Fix Documentation location reference for where LSM descriptions should
be placed.
Suggested-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: linux-security-module@vger.kernel.org
Signed-off-by: James Morris <james.morris@microsoft.com>

Documentation/security/LSM.rst

@@ -5,7 +5,7 @@ Linux Security Module Development
 Based on https://lkml.org/lkml/2007/10/26/215,
 a new LSM is accepted into the kernel when its intent (a description of
 what it tries to protect against and in what cases one would expect to
-use it) has been appropriately documented in ``Documentation/security/LSM.rst``.
+use it) has been appropriately documented in ``Documentation/admin-guide/LSM/``.
 This allows an LSM's code to be easily compared to its goals, and so
 that end users and distros can make a more informed decision about which
 LSMs suit their requirements.