doc: replace cluster name with cluster-name to avoid confusing

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

diff --git a/doc/man/8/rbd.rst b/doc/man/8/rbd.rst
index 85f9c8616d680c0403234efa4a01a0143a4b658a..7564be0ef993e62aa78b6aaa864d88cb1699ea07 100644 (file)
--- a/doc/man/8/rbd.rst
+++ b/doc/man/8/rbd.rst
@@ -9,7 +9,7 @@
 Synopsis
 ========
 
-| **rbd** [ -c *ceph.conf* ] [ -m *monaddr* ] [--cluster *cluster name*]
+| **rbd** [ -c *ceph.conf* ] [ -m *monaddr* ] [--cluster *cluster-name*]
   [ -p | --pool *pool* ] [--size *size* ] [ --object-size *B/K/M* ] [ *command* ... ] 
 
 
@@ -35,7 +35,7 @@ Options
 
    Connect to specified monitor (instead of looking through ceph.conf).
 
-.. option:: --cluster cluster name
+.. option:: --cluster cluster-name
 
    Use different cluster name as compared to default cluster name *ceph*.
 
@@ -512,7 +512,7 @@ To map an image via the kernel with cephx enabled::
 
 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::