doc: fix typo

Signed-off-by: xiexingguo <xie.xingguo@zte.com.cn>

diff --git a/doc/rados/operations/cache-tiering.rst b/doc/rados/operations/cache-tiering.rst
index 25dc7c45868f33c693e7dbaa81e142226bf96f98..f7fadd06b6f7d91d0729416d2a2e1ee07af8fd4b 100644 (file)
--- a/doc/rados/operations/cache-tiering.rst
+++ b/doc/rados/operations/cache-tiering.rst
@@ -286,7 +286,7 @@ objects with a higher speed. To set the ``cache_target_dirty_high_ratio``::
 
        ceph osd pool set {cachepool} cache_target_dirty_high_ratio {0.0..1.0}
 
-For example, setting the value to ``0.6`` will begin aggressively flush diryt objects
+For example, setting the value to ``0.6`` will begin aggressively flush dirty objects
 when they reach 60% of the cache pool's capacity. obviously, we'd better set the value
 between dirty_ratio and full_ratio::