[doc](fix) Improve the document example of alter table replace (#21958)

Improve the document example of alter table replace
The old doc example was wrong

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

@@ -67,12 +67,23 @@ If `swap` is `false`, do as follows:
 
 ### Example
 
-1. Swap `tbl1` with `tbl2` without deleting the `tbl1` table
+1. Atomic swap `tbl1` with `tbl2` without dropping any tables
 
 ```sql
-ALTER TABLE tbl1 REPLACE WITH TABLE tbl2
-    [PROPERTIES('swap' = 'true')];
+ALTER TABLE tbl1 REPLACE WITH TABLE tbl2;
 ```
+or
+```sql
+ALTER TABLE tbl1 REPLACE WITH TABLE tbl2 PROPERTIES('swap' = 'true');
+```
+
+2. Atomic swap `tbl1` with `tbl2` and deleting the `tbl2` table(Keep `tbl1` and the data of the original `tbl2`)
+
+```sql
+ALTER TABLE tbl1 REPLACE WITH TABLE tbl2 PROPERTIES('swap' = 'false');
+```
+
+
 
 ### Keywords
 

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

@@ -67,11 +67,20 @@ ALTER TABLE [db.]tbl1 REPLACE WITH TABLE tbl2
 
 ### Example
 
-1. 将 `tbl1` 与 `tbl2` 进行交换，不删除 `tbl1` 表
+1. 将 `tbl1` 与 `tbl2` 进行原子交换，不删除任何表
 
 ```sql
-ALTER TABLE tbl1 REPLACE WITH TABLE tbl2
-    [PROPERTIES('swap' = 'true')];
+ALTER TABLE tbl1 REPLACE WITH TABLE tbl2;
+```
+或
+```sql
+ALTER TABLE tbl1 REPLACE WITH TABLE tbl2 PROPERTIES('swap' = 'true') ;
+```
+
+2. 将 `tbl1` 与 `tbl2` 进行交换，删除 `tbl2` 表（保留名为`tbl1`,数据为`tbl2`的表）
+
+```sql
+ALTER TABLE tbl1 REPLACE WITH TABLE tbl2 PROPERTIES('swap' = 'false') ;
 ```
 
 ### Keywords