Updated documentation

src/Http/Client.php

@@ -232,7 +232,8 @@ class Client implements ClientInterface
     /**
      * Client instance returned is scoped to the domain, port, and scheme parsed from the passed URL string. The passed
      * string must have a scheme and a domain. Optionally, if a port is included in the string, the port will be scoped
-     * too. Other parts of the url string are ignored.
+     * too. If a path is included in the URL, the client instance will build urls with it prepended.
+     * Other parts of the url string are ignored.
      *
      * @param  string $url A string URL e.g. https://example.com
      * @return static