docs: kill query command need quote around id (#22588)

* docs: add current_user() in function

* docs: kill query command need quote around id

docs/en/12-taos-sql/28-recovery.md

@@ -17,7 +17,7 @@ You can use the SHOW CONNECTIONS statement to find the conn_id.
 ## Terminate a Query
 
 ```sql
-KILL QUERY kill_id;
+KILL QUERY 'kill_id';
 ```
 
 You can use the SHOW QUERIES statement to find the kill_id.

docs/zh/12-taos-sql/28-recovery.md

@@ -17,7 +17,7 @@ conn_id 可以通过 `SHOW CONNECTIONS` 获取。
 ## 终止查询
 
 ```sql
-KILL QUERY kill_id;
+KILL QUERY 'kill_id';
 ```
 
 kill_id 可以通过 `SHOW QUERIES` 获取。