docs(route-wildcards): add warning to route wildcards section

- only express has support for wildcards in the middle of routes
- when using fastify an error is thrown

Author: pedroluiznogueira

content/controllers.md

@@ -202,6 +202,8 @@ findAll() {
 
 The `'ab*cd'` route path will match `abcd`, `ab_cd`, `abecd`, and so on. The characters `?`, `+`, `*`, and `()` may be used in a route path, and are subsets of their regular expression counterparts. The hyphen ( `-`) and the dot (`.`) are interpreted literally by string-based paths.
 
+> **Warning** A wildcard in the middle of the route is only supported by express.
+
 #### Status code
 
 As mentioned, the response **status code** is always **200** by default, except for POST requests which are **201**. We can easily change this behavior by adding the `@HttpCode(...)` decorator at a handler level.