doc/rados: s/backend/back end/

s/backend/back end/ in storage-devices.rst.
(IBM Style Guide, 305).

Signed-off-by: Zac Dover <zac.dover@gmail.com>
(cherry picked from commit 28abc6a9a5910c7cf0ed8d9487c70b1827edeb15)

diff --git a/doc/rados/configuration/storage-devices.rst b/doc/rados/configuration/storage-devices.rst
index 2663b09a2d4eb13fcafe1ace3262f7395207989e..9f680c0d94fcabb30b45a8e4ddfc0c95a347cb99 100644 (file)
--- a/doc/rados/configuration/storage-devices.rst
+++ b/doc/rados/configuration/storage-devices.rst
@@ -24,18 +24,17 @@ There are several Ceph daemons in a storage cluster:
   monitoring and management systems.
 
 
-OSD Backends
-============
+OSD Back Ends
+=============
 
-There are two ways that OSDs manage the data they store. 
-As of the Luminous 12.2.z release, the default (and recommended) backend is
-*BlueStore*.  Prior to the Luminous release, the default (and only option) was
-*Filestore*.
+There are two ways that OSDs manage the data they store.  As of the Luminous
+12.2.z release, the default (and recommended) back end is *BlueStore*.  Prior
+to the Luminous release, the default (and only) back end was *Filestore*.
 
 BlueStore
 ---------
 
-BlueStore is a special-purpose storage backend designed specifically for
+BlueStore is a special-purpose storage back end designed specifically for
 managing data on disk for Ceph OSD workloads.  BlueStore's design is based on
 a decade of experience of supporting and managing Filestore OSDs.