multi: Fix typos [skip ci]

discovery/bootstrapper.go

@@ -313,7 +313,7 @@ func NewDNSSeedBootstrapper(
 
 // fallBackSRVLookup attempts to manually query for SRV records we need to
 // properly bootstrap. We do this by querying the special record at the "soa."
-// sub-domain of supporting DNS servers. The retuned IP address will be the IP
+// sub-domain of supporting DNS servers. The returned IP address will be the IP
 // address of the authoritative DNS server. Once we have this IP address, we'll
 // connect manually over TCP to request the SRV record. This is necessary as
 // the records we return are currently too large for a class of resolvers,
@@ -361,7 +361,7 @@ func (d *DNSSeedBootstrapper) fallBackSRVLookup(soaShim string,
 			"received: %v", resp.Rcode)
 	}
 
-	// Retrieve the RR(s) of the Answer section, and covert to the format
+	// Retrieve the RR(s) of the Answer section, and convert to the format
 	// that net.LookupSRV would normally return.
 	var rrs []*net.SRV
 	for _, rr := range resp.Answer {