doc: fix rbd map format in rbd manpage

Signed-off-by: Chengwei Yang <yangchengwei@qiyi.com>

diff --git a/doc/man/8/rbd.rst b/doc/man/8/rbd.rst
index 87ec0f3c71da9af3cd443482a1c84402cff80240..85f9c8616d680c0403234efa4a01a0143a4b658a 100644 (file)
--- a/doc/man/8/rbd.rst
+++ b/doc/man/8/rbd.rst
@@ -510,9 +510,9 @@ To map an image via the kernel with cephx enabled::
 
        rbd map mypool/myimage --id admin --keyfile secretfile
 
-To map an image via the kernel with different cluster name other than default *ceph*.
+To map an image via the kernel with different cluster name other than default *ceph*::
 
-       rbd map mypool/myimage --cluster *cluster name*
+       rbd map mypool/myimage --cluster cluster name
 
 To unmap an image::