docs(volo-http): update volo-http json extractor related contents to … (#1539)

Author: shenyj3

content/en/docs/volo/volo-http/tutorials/response.md

@@ -45,8 +45,8 @@ In the framework, types such as `Form`, `Json`, etc. also implement `IntoRespons
 
 ```rust
 use volo_http::{
-    json::Json,
     server::{
+        extract::Json,
         route::{get, post, Router},
         IntoResponse,
     },

content/en/docs/volo/volo-http/tutorials/route.md

@@ -376,10 +376,10 @@ use std::convert::Infallible;
 
 use volo_http::{
     context::ServerContext,
-    json::Json,
     request::ServerRequest,
     response::ServerResponse,
     server::{
+        extract::Json,
         route::{post_service, Router},
         IntoResponse,
     },
@@ -410,4 +410,4 @@ pub fn json_test_router() -> Router {
 }
 ```
 
-The final run is expected to be consistent with `json_get` and `json_post`.
+The final run is expected to be consistent with `json_get` and `json_post`.

content/zh/docs/volo/volo-http/tutorials/response.md

@@ -46,8 +46,8 @@ async fn teapot() -> StatusCode { StatusCode::IM_A_TEAPOT }
 
 ```rust
 use volo_http::{
-    json::Json,
     server::{
+        extract::Json,
         route::{get, post, Router},
         IntoResponse,
     },

content/zh/docs/volo/volo-http/tutorials/route.md

@@ -372,10 +372,10 @@ use std::convert::Infallible;
 
 use volo_http::{
     context::ServerContext,
-    json::Json,
     request::ServerRequest,
     response::ServerResponse,
     server::{
+        extract::Json,
         route::{post_service, Router},
         IntoResponse,
     },
@@ -406,4 +406,4 @@ pub fn json_test_router() -> Router {
 }
 ```
 
-最终运行的效果预期与 `json_get` 和 `json_post` 一致
+最终运行的效果预期与 `json_get` 和 `json_post` 一致