Add liks to related sections of docs from API reference pages

docs/en/docs/reference/request.md

@@ -2,6 +2,8 @@
 
 You can declare a parameter in a *path operation function* or dependency to be of type `Request` and then you can access the raw request object directly, without any validation, etc.
 
+Read more about it in the [FastAPI docs about using Request directly](https://fastapi.tiangolo.com/advanced/using-request-directly/)
+
 You can import it directly from `fastapi`:
 
 ```python

docs/en/docs/reference/response.md

@@ -4,6 +4,8 @@ You can declare a parameter in a *path operation function* or dependency to be o
 
 You can also use it directly to create an instance of it and return it from your *path operations*.
 
+Read more about it in the [FastAPI docs about returning a custom Response](https://fastapi.tiangolo.com/advanced/response-directly/#returning-a-custom-response)
+
 You can import it directly from `fastapi`:
 
 ```python

docs/en/docs/reference/responses.md

@@ -56,6 +56,8 @@ There are a couple of custom FastAPI response classes, you can use them to optim
 
 ## Starlette Responses
 
+You can read more about all of them in the [FastAPI docs for Custom Response](https://fastapi.tiangolo.com/advanced/custom-response/) and in the [Starlette docs about Responses](https://starlette.dev/responses/).
+
 ::: fastapi.responses.FileResponse
     options:
         members:

docs/en/docs/reference/security/index.md

@@ -28,6 +28,8 @@ from fastapi.security import (
 )
 ```
 
+Read more about them in the [FastAPI docs about Security](https://fastapi.tiangolo.com/tutorial/security/).
+
 ## API Key Security Schemes
 
 ::: fastapi.security.APIKeyCookie

docs/en/docs/reference/websockets.md

@@ -2,6 +2,8 @@
 
 When defining WebSockets, you normally declare a parameter of type `WebSocket` and with it you can read data from the client and send data to it.
 
+Read more about it in the [FastAPI docs for WebSockets](https://fastapi.tiangolo.com/advanced/websockets/)
+
 It is provided directly by Starlette, but you can import it from `fastapi`:
 
 ```python