rename

Signed-off-by: cfzjywxk <[email protected]>

tikv-configuration-file.md

@@ -2309,7 +2309,7 @@ For pessimistic transaction usage, refer to [TiDB Pessimistic Transaction Mode](
 + Default value: `512KiB`
 + Unit: KiB|MiB|GiB
 
-### `in-memory` <span class="version-mark">New in v8.4.0</span>
+### `in-memory-instance-size-limit` <span class="version-mark">New in v8.4.0</span>
 
 + Control the memory size limit of pessimistic locks for one TiKV instance. The pessimistic locks would be written persistently if the memory usage exceeds the limit.
 + Default value: `100MiB`