docs: Improve clarity of next('route') usage in Route Handlers section (#2034)

en/guide/routing.md

@@ -246,6 +246,24 @@ In Express 4.x, <a href="https://github.com/expressjs/express/issues/2495">the `
 
 You can provide multiple callback functions that behave like [middleware](/{{ page.lang }}/guide/using-middleware.html) to handle a request. The only exception is that these callbacks might invoke `next('route')` to bypass the remaining route callbacks. You can use this mechanism to impose pre-conditions on a route, then pass control to subsequent routes if there's no reason to proceed with the current route.
 
+```js
+app.get('/user/:id', (req, res, next) => {
+  if (req.params.id === '0') {
+    return next('route')
+  }
+  res.send(`User ${req.params.id}`)
+})
+
+app.get('/user/:id', (req, res) => {
+  res.send('Special handler for user ID 0')
+})
+```
+
+In this example:
+
+- `GET /user/5` → handled by first route → sends "User 5"
+- `GET /user/0` → first route calls `next('route')`, skipping to the next matching `/user/:id` route
+
 Route handlers can be in the form of a function, an array of functions, or combinations of both, as shown in the following examples.
 
 A single callback function can handle a route. For example: