Update README.md

[evilpie]

This now compiles and matches the code at

rust-urlpattern/src/lib.rs

Lines 266 to 283 in 4b585ac

	/// ```
	/// use urlpattern::UrlPattern;
	/// use urlpattern::UrlPatternInit;
	/// use urlpattern::UrlPatternMatchInput;
	///
	///# fn main() {
	/// // Create the UrlPattern to match against.
	/// let init = UrlPatternInit {
	/// pathname: Some("/users/:id".to_owned()),
	/// ..Default::default()
	/// };
	/// let pattern = <UrlPattern>::parse(init, Default::default()).unwrap();
	///
	/// // Match the pattern against a URL.
	/// let url = "https://example.com/users/123".parse().unwrap();
	/// let result = pattern.exec(UrlPatternMatchInput::Url(url)).unwrap().unwrap();
	/// assert_eq!(result.pathname.groups.get("id").unwrap().as_ref().unwrap(), "123");
	///# }

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