Fix doc building errors

Author: dr-orlovsky

addr/src/inet.rs

@@ -44,11 +44,11 @@ pub enum AddrParseError {
     WrongAddrFormat(String),
 
     /// Wrong format of socket address string "{_0}"; use
-    /// <inet_address>\[:<port>\]
+    /// \<inet_address\>\[:\<port\>\]
     WrongSocketFormat(String),
 
     /// Wrong format of extended socket address string "{_0}"; use
-    /// <transport>://<inet_address>\[:<port>\]
+    /// \<transport\>://\<inet_address\>\[:\<port\>\]
     WrongSocketExtFormat(String),
 
     /// Unknown transport protocol "{_0}"