docs: device-mapper: move it to the admin-guide
The DM support describes lots of aspects related to mapped
disk partitions from the userspace PoV.
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
diff --git a/Documentation/admin-guide/index.rst b/Documentation/admin-guide/index.rst
index abc2c4e..64e97a9 100644
--- a/Documentation/admin-guide/index.rst
+++ b/Documentation/admin-guide/index.rst
@@ -80,6 +80,7 @@
namespaces/index
perf-security
acpi/index
+ device-mapper/index
.. only:: subproject and html
