doc: optimize.

docs/zh/base/db-row.md

@@ -49,7 +49,7 @@ Page<Row> rowPage=Db.paginate("tb_account",3,10,query);
 // 新增 Row 构建
 DbChain.table("tb_account")
     .setId(RowKey.AUTO)
-    .set("user_name","王帅")
+    .set("user_name","zhangsan")
     .set("age",18)
     .set("birthday",new Date())
     .save();

mybatis-flex-test/mybatis-flex-native-test/src/main/java/com/mybatisflex/test/SexEnum.java

@@ -36,7 +36,7 @@ public enum SexEnum {
     }
 
     @EnumValue
-    public Integer getCode() {
+    public int getCode() {
         return code;
     }