[12.x] Documenting the Uri pathSegments() method (#10349)

* Documenting the Uri pathSegments() method

* Update helpers.md

---------

Co-authored-by: Taylor Otwell <taylor@laravel.com>

Author: AhmedAlaa4611

helpers.md

@@ -3368,6 +3368,7 @@ $scheme = $uri->scheme();
 $host = $uri->host();
 $port = $uri->port();
 $path = $uri->path();
+$segments = $uri->pathSegments();
 $query = $uri->query();
 $fragment = $uri->fragment();
 ```