Link is link, remove doc warning

parsers/src/sasl_cb.rs

@@ -9,8 +9,7 @@ use xso::{error::Error, AsXml, AsXmlText, FromXml, FromXmlText};
 use crate::ns;
 use std::borrow::Cow;
 
-/// One type of channel-binding, as defined by the IANA:
-/// https://www.iana.org/assignments/channel-binding-types/channel-binding-types.xhtml
+/// One type of channel-binding, as [defined by the IANA](https://www.iana.org/assignments/channel-binding-types/channel-binding-types.xhtml)
 #[derive(Debug, Clone, PartialEq)]
 pub enum Type {
     /// The tls-unique channel binding.