doc/mgr: edit iostat.rst

Rewrite the first sentence in doc/mgr/iostat.rst. This follows up on a
request made by Anthony D'Atri in
https://github.com/ceph/ceph/pull/63418#discussion_r2102806688.

Signed-off-by: Zac Dover <zac.dover@proton.me>
(cherry picked from commit 766a58ce7bc725d37b642df56465b28bde4f2f4a)

diff --git a/doc/mgr/iostat.rst b/doc/mgr/iostat.rst
index ff24f1758604e7cb8c7d046e33397af765f92c4b..997f66709a8201b915f36e53a1f3f8e9f37a5b58 100644 (file)
--- a/doc/mgr/iostat.rst
+++ b/doc/mgr/iostat.rst
@@ -3,8 +3,7 @@
 iostat
 ======
 
-The ``iostat`` module shows the current throughput and IOPS done on the Ceph
-cluster.
+The ``iostat`` module reports metrics for cluster throughpout and IOPS. 
 
 Enabling
 --------