Update from comments

Co-authored-by: Dario Nieuwenhuis <dirbaio@dirbaio.net>

src/wire/mod.rs

@@ -252,7 +252,7 @@ pub use self::dhcpv4::{
 
 #[cfg(feature = "proto-dns")]
 pub use self::dns::{
-    Flags as DnsFlags, Opcode as DnsOpCode, Packet as DnsPacket, Repr as DnsRepr,
+    Flags as DnsFlags, Opcode as DnsOpcode, Packet as DnsPacket, Repr as DnsRepr,
     Type as DnsQueryType,
 };