fixup! Implement std::fmt::Display for HumanReadableName

Author: chuksys

lightning/src/onion_message/dns_resolution.rs

@@ -36,7 +36,7 @@ use dnssec_prover::rr::Name;
 
 use lightning_types::features::NodeFeatures;
 
-use std::fmt;
+use core::fmt;
 
 use crate::blinded_path::message::DNSResolverContext;
 use crate::io;