refactor(dns): rename Config to Transport

Co-authored-by: Thomas Eizinger <thomas@eizinger.io>

transports/dns/src/lib.rs

@@ -180,10 +180,10 @@ const MAX_DNS_LOOKUPS: usize = 32;
 /// result of a single `/dnsaddr` lookup.
 const MAX_TXT_RECORDS: usize = 16;
 
-/// A `Transport` wrapper for performing DNS lookups when dialing `Multiaddr`esses.
+/// A [`Transport`] for performing DNS lookups when dialing `Multiaddr`esses.
 /// You shouldn't need to use this type directly. Use [`tokio::Config`] or [`async_std::Config`] instead.
 #[derive(Debug)]
-pub struct Config<T, R> {
+pub struct Transport<T, R> {
     /// The underlying transport.
     inner: Arc<Mutex<T>>,
     /// The DNS resolver used when dialing addresses with DNS components.
@@ -193,7 +193,7 @@ pub struct Config<T, R> {
 #[deprecated(note = "Use `async_std::Config` or `tokio::Config` instead.")]
 pub type GenDnsConfig<T, R> = Config<T, R>;
 
-impl<T, R> Transport for Config<T, R>
+impl<T, R> libp2p_core::Transport for Config<T, R>
 where
     T: Transport + Send + Unpin + 'static,
     T::Error: Send,