doc: Fix doc for mds cap acquisition throttle

The config values picks the definition from the
description. Removed the duplicate description
in the doc.

Signed-off-by: Kotresh HR <khiremat@redhat.com>

doc/cephfs/cache-configuration.rst

@@ -154,14 +154,8 @@ readdir. The behavior of the decay counter is the same as for cache trimming or
 caps recall. Each readdir call increments the counter by the number of files in
 the result.
 
-The ratio of ``mds_max_caps_per_client`` that client must exceed before readdir
-maybe throttled by cap acquisition throttle:
-
 .. confval:: mds_session_max_caps_throttle_ratio
 
-The timeout in seconds after which a client request is retried due to cap
-acquisition throttling:
-
 .. confval:: mds_cap_acquisition_throttle_retry_request_timeout
 
 If the number of caps acquired by the client per session is greater than the

src/common/options/mds.yaml.in

@@ -337,8 +337,7 @@ options:
   level: advanced
   desc: decay rate for session readdir caps leading to readdir throttle
   long_desc: The half-life for the session cap acquisition counter of caps acquired
-    by readdir. This is used for throttling readdir requests from clients slow to
+    by readdir. This is used for throttling readdir requests from clients.
-    release caps.
   default: 30
   services:
   - mds
@@ -347,7 +346,7 @@ options:
 - name: mds_session_cap_acquisition_throttle
   type: uint
   level: advanced
-  desc: throttle point for cap acquisition decay counter
+  desc: threshold at which the cap acquisition decay counter throttles
   default: 100000
   services:
   - mds