[typo](docs)clearly describe the rename syntax (#20335)

docs/en/docs/sql-manual/sql-reference/Data-Definition-Statements/Alter/ALTER-TABLE-RENAME.md

@@ -81,7 +81,7 @@ RENAME COLUMN old_column_name new_column_name;
 ```
 
 Notice:
-- Currently only tables with column unique id are supported, which are created with property 'light_schema_change'.
+- Currently only tables of the unique model are supported, which are created with property 'light_schema_change=true'.
 
 
 ### Example

docs/zh-CN/docs/sql-manual/sql-reference/Data-Definition-Statements/Alter/ALTER-TABLE-RENAME.md

@@ -81,7 +81,7 @@ RENAME COLUMN old_column_name new_column_name;
 ```
 
 注意：
-- 目前仅支持有 column unique id 的表, 通过 'light_schema_change' 属性创建。
+- 目前仅支持unique模型的表，并且建表时需要在property中设置light_schema_change=true
 
 
 ### Example