update zh-cn/application-dev/quick-start/arkts-builderparam.md.

Signed-off-by: N189******51 <lipeicheng5@huawei.com>

zh-cn/application-dev/quick-start/arkts-builderparam.md

@@ -34,8 +34,8 @@
 - 用父组件自定义构建函数初始化子组件\@BuildParam装饰的方法。
 
   ```ts
-@Component
-struct Child {
+  @Component
+  struct Child {
     @Builder componentBuilder() {
       Text(`Parent builder `)
     }
@@ -47,11 +47,11 @@ struct Child {
         this.aBuilder0()
       }
     }
-}
+  }
 
-@Entry
-@Component
-struct Parent {
+  @Entry
+  @Component
+  struct Parent {
     @Builder componentBuilder() {
       Text(`Parent builder `)
     }
@@ -61,7 +61,7 @@ struct Parent {
         Child({ aBuilder0: this.componentBuilder })
       }
     }
-}
+  }
   ```
 
 
@@ -74,8 +74,8 @@ struct Parent {
    >  开发者谨慎使用bind改变函数调用的上下文，可能会使this指向混乱。
 
   ```ts
-@Component
-struct Child {
+  @Component
+  struct Child {
     @Builder componentBuilder() {
       Text(`Child builder `)
     }
@@ -90,11 +90,11 @@ struct Child {
         this.aBuilder1()
       }
     }
-}
+  }
 
-@Entry
-@Component
-struct Parent {
+  @Entry
+  @Component
+  struct Parent {
     label: string = `Parent`
 
     @Builder componentBuilder() {
@@ -107,7 +107,7 @@ struct Parent {
         Child({ aBuilder0: this.componentBuilder, aBuilder1: this.componentBuilder })
       }
     }
-}
+  }
   ```