Fix data-url README

Author: SimonSapin

data-url/README.md

@@ -1,18 +1,18 @@
 # data-url
 
-![crates.io](https://img.shields.io/crates/v/url.svg)
-![docs.rs](https://docs.rs/data-url/)
+[![crates.io](https://img.shields.io/crates/v/data-url.svg)](https://crates.io/crates/data-url)
+[![docs.rs](https://img.shields.io/badge/docs.rs-%F0%9F%93%84-blue.svg)](https://docs.rs/data-url/)
 
 Processing of `data:` URLs in Rust according to the Fetch Standard:
 <https://fetch.spec.whatwg.org/#data-urls>
 but starting from a string rather than a parsed URL to avoid extra copies.
 
 ```rust
 use data_url::{DataUrl, mime};
-//!
+
 let url = DataUrl::process("data:,Hello%20World!").unwrap();
 let (body, fragment) = url.decode_to_vec().unwrap();
-//!
+
 assert_eq!(url.mime_type().type_, "text");
 assert_eq!(url.mime_type().subtype, "plain");
 assert_eq!(url.mime_type().get_parameter("charset"), Some("US-ASCII"));