fix typo: change 'PLAN PLAYER CAPTURE' to 'PLAN REPLAYER CAPTURE' (#1…

…7953)

sql-plan-replayer.md

@@ -235,7 +235,7 @@ PLAN REPLAYER CAPTURE 'sql_digest' '*';
 You can view the ongoing capture tasks of `PLAN REPLAYER CAPTURE` in the TiDB cluster using the following statement:
 
 ```sql
-mysql> PLAN PLAYER CAPTURE 'example_sql' 'example_plan';
+mysql> PLAN REPLAYER CAPTURE 'example_sql' 'example_plan';
 Query OK, 1 row affected (0.01 sec)
 
 mysql> SELECT * FROM mysql.plan_replayer_task;