message: Update std doc url to specifically link to stable.
diff: @@ -68,7 +68,7 @@ impl ToJson for RustdocPage {
  /// Handler called for the `/std`. Redirects to the official standard library docs.
  pub fn std_redirector_handler(_req: &mut Request) -> IronResult<Response> {
  - let url = Url::parse("https://doc.rust-lang.org/std/").unwrap();
  + let url = Url::parse("https://doc.rust-lang.org/stable/std/").unwrap();
  Ok(Response::with((status::Found, Redirect(url))))
  }
  