Add policies information to routing and link controllers to routing docs (#8445)

Signed-off-by: Derrick Mehaffy <derrickmehaffy@gmail.com>

docs/v3.x/concepts/controllers.md

@@ -316,7 +316,7 @@ Every action receives a `context` (`ctx`) object as first parameter containing t
 
 ### Example
 
-In this example, we are defining a specific route in `./api/hello/config/routes.json` that takes `Hello.index` as handler.
+In this example, we are defining a specific route in `./api/hello/config/routes.json` that takes `Hello.index` as handler. For more information on routing, please see the [Routing documentation](./routing.md)
 
 It means that every time a request `GET /hello` is sent to the server, Strapi will call the `index` action in the `Hello.js` controller.
 Our `index` action will return `Hello World!`. You can also return a JSON object.
@@ -329,7 +329,10 @@ Our `index` action will return `Hello World!`. You can also return a JSON object
     {
       "method": "GET",
       "path": "/hello",
-      "handler": "Hello.index"
+      "handler": "Hello.index",
+      "config": {
+        "policies": []
+      }
     }
   ]
 }

docs/v3.x/concepts/routing.md

@@ -49,6 +49,10 @@ You have to edit the `routes.json` file in one of your APIs folders (`./api/**/c
 - `config`
   - `policies` (array): Array of policy names or paths ([see more](./policies.md))
 
+::: tip
+You can exclude the entire `config` object if you do not want the route to be checked by the [Users & Permissions plugin](../plugins/users-permissions.md).
+:::
+
 ## Dynamic parameters
 
 The router used by Strapi allows you to create dynamic routes where you can use parameters and simple regular expressions. These parameters will be exposed in the `ctx.params` object. For more details, please refer to the [PathToRegex](https://github.com/pillarjs/path-to-regexp) documentation.