update some docs

docs/en/src/define_interface.md

@@ -8,10 +8,10 @@ Therefore, the `Object`'s fields' type, arguments must match with the `Interface
 `Async-graphql` implemented auto conversion from `Object` to `Interface`, you only need to call `Into::into`.
 
 Interface fields names transforms to camelCase in schema definition.
-If you need e.g. snake_cased field name, there is `method` argument in field.
+If you need e.g. snake_cased GraphQL field name, you can use both the `name` and `method` attribute.
 
-- When the `name` and `method` exist together, the `name` is the graphql name and the `method` is the rust method name.
-- When only `name` exists, `name.to_camel_case()` is the graphql name and the `name` is the rust method name.
+- When the `name` and `method` exist together, the `name` is the GraphQL field name and the `method` is the resolver function name.
+- When only `name` exists, `name.to_camel_case()` is the GraphQL field name and the `name` is the resolver function name.
 
 ```rust
 use async_graphql::*;

docs/zh-CN/src/define_interface.md

@@ -4,6 +4,13 @@
 
 `Async-graphql`自动实现了对象到接口的转换，把一个对象类型转换为接口类型只需要调用`Into::into`。
 
+接口字段的`name`属性表示转发的Resolver函数，并且它将被转换为驼峰命名作为字段名称。
+如果你需要自定义GraphQL接口字段名称，可以同时使用`name`和`method`属性。
+
+- 当`name`和`method`属性同时存在时，`name`是GraphQL接口字段名，而`method`是Resolver函数名。
+- 当只有`name`存在时, 转换为驼峰命名后的`name`是GraphQL接口字段名，而`name`是Resolver函数名。
+
+
 ```rust
 use async_graphql::*;
 
@@ -20,6 +27,11 @@ impl Circle {
     async fn scale(&self, s: f32) -> Shape {
         Circle { radius: self.radius * s }.into()
     }
+
+    #[field(name = "short_description")]
+    async fn short_description(&self) -> String {
+        "Circle".to_string()
+    }
 }
 
 struct Square {
@@ -35,11 +47,17 @@ impl Square {
     async fn scale(&self, s: f32) -> Shape {
         Square { width: self.width * s }.into()
     }
+
+    #[field(name = "short_description")]
+    async fn short_description(&self) -> String {
+        "Square".to_string()
+    }
 }
 
 #[Interface(
     field(name = "area", type = "f32"),
     field(name = "scale", type = "Shape", arg(name = "s", type = "f32"))
+    field(name = "short_description", method = "short_description", type = "String")
 )]
 enum Shape {
     Circle(Circle),