*: Rename snap-max-write-bytes-per-sec (tiflash) (#18590) (#18690)

Author: ti-chi-bot

tiflash/create-tiflash-replicas.md

@@ -134,7 +134,7 @@ Before TiFlash replicas are added, each TiKV instance performs a full table scan
     ```sql
     -- The default value for both configurations are 100MiB, i.e. the maximum disk bandwidth used for writing snapshots is no more than 100MiB/s.
     SET CONFIG tikv `server.snap-io-max-bytes-per-sec` = '300MiB';
-    SET CONFIG tiflash `raftstore-proxy.server.snap-max-write-bytes-per-sec` = '300MiB';
+    SET CONFIG tiflash `raftstore-proxy.server.snap-io-max-bytes-per-sec` = '300MiB';
     ```
 
     After executing these SQL statements, the configuration changes take effect immediately without restarting the cluster. However, since the replication speed is still restricted by the PD limit globally, you cannot observe the acceleration for now.
@@ -173,7 +173,7 @@ Before TiFlash replicas are added, each TiKV instance performs a full table scan
 
     ```sql
     SET CONFIG tikv `server.snap-io-max-bytes-per-sec` = '100MiB';
-    SET CONFIG tiflash `raftstore-proxy.server.snap-max-write-bytes-per-sec` = '100MiB';
+    SET CONFIG tiflash `raftstore-proxy.server.snap-io-max-bytes-per-sec` = '100MiB';
     ```
 
 ## Set available zones