doc/rados/operations: crush_rule is a name

like
```
ceph osd pool set <pool-name> crush_rule <rule-name>
```
where `<rule-name>` is a string instead of a number.

Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit 3ed3de6c964ba998d5b18ceb997d1a6dffe355db)

diff --git a/doc/rados/operations/pools.rst b/doc/rados/operations/pools.rst
index 838221d1f010ca74e6455d9ad70583415319d04d..134b1d52f6fb205102c6837d3ed32d876fad3555 100644 (file)
--- a/doc/rados/operations/pools.rst
+++ b/doc/rados/operations/pools.rst
@@ -351,7 +351,7 @@ You may set values for the following keys:
 ``crush_rule``
 
 :Description: The rule to use for mapping object placement in the cluster.
-:Type: Integer
+:Type: String
 
 .. _allow_ec_overwrites: