Update basic.md example to set path

[arobase-che]

Send the path to the URI field instead of the whole URI.

The goal is to make it works with unnamed server like local one 127.0.0.1:8080 or servers unaware of they own name (or alternative name).

I do not see any drawback to that change and I think it maybe more user-friendly to use relative URI here.

Edit: Oupsy ! I see one. The query part is missing.
I should have use path_and_query instead of path only. But it make it a lot more complex with something like that:

    let req = Request::builder()
        .uri(hyper::Uri::from_parts({
            let mut uri_ = <http::uri::Parts as std::default::Default>::default();
            uri_.path_and_query = url.path_and_query().cloned();
            uri_
        })?)
        .header(hyper::header::HOST, authority.as_str())
        .body(Empty::<Bytes>::new())?;

Maybe we can have something in between or maybe the initial code is well enough.
Thank you.

[dswij]

Thanks for the PR!

The guide is specifically to send a GET request to httpbin:

hyperium.github.io/_stable/client/basic.md

Line 62 in f0026ea

going to send a GET [`Request`][Request] to [http://httpbin.org/ip](http://httpbin.org/ip),

[arobase-che]

Oh ! Get it. Thank you.