Small doc updates

msg.go

@@ -237,7 +237,7 @@ var RcodeToString = map[int]string{
 // PackDomainName packs a domain name s into msg[off:].
 // If compression is wanted compress must be true and the compression
 // map needs to hold a mapping between domain names and offsets
-// pointing into msg[].
+// pointing into msg.
 func PackDomainName(s string, msg []byte, off int, compression map[string]int, compress bool) (off1 int, err error) {
 	off1, _, err = packDomainName(s, msg, off, compression, compress)
 	return

zscan.go

@@ -131,11 +131,11 @@ func ReadRR(q io.Reader, filename string) (RR, error) {
 	return r.RR, nil
 }
 
-// ParseZone reads a RFC 1035 style one from r. It returns *Tokens on the
+// ParseZone reads a RFC 1035 style zonefile from r. It returns *Tokens on the
 // returned channel, which consist out the parsed RR, a potential comment or an error.
 // If there is an error the RR is nil. The string file is only used
 // in error reporting. The string origin is used as the initial origin, as
-// if the file would start with: $ORIGIN origin  .
+// if the file would start with: $ORIGIN origin .
 // The directives $INCLUDE, $ORIGIN, $TTL and $GENERATE are supported.
 // The channel t is closed by ParseZone when the end of r is reached.
 //
@@ -152,7 +152,7 @@ func ReadRR(q io.Reader, filename string) (RR, error) {
 //
 //	foo. IN A 10.0.0.1 ; this is a comment
 //
-// The text "; this is comment" is returned in Token.Comment . Comments inside the
+// The text "; this is comment" is returned in Token.Comment. Comments inside the
 // RR are discarded. Comments on a line by themselves are discarded too.
 func ParseZone(r io.Reader, origin, file string) chan *Token {
 	return parseZoneHelper(r, origin, file, 10000)