Fix typos

Author: Olaf Alders

reader.go

@@ -32,7 +32,7 @@ type Reader struct {
 }
 
 // Metadata holds the metadata decoded from the MaxMind DB file. In particular
-// in has the format version, the build time as Unix epoch time, the database
+// it has the format version, the build time as Unix epoch time, the database
 // type and description, the IP version supported, and a slice of the natural
 // languages included.
 type Metadata struct {

traverse.go

@@ -21,7 +21,7 @@ type Networks struct {
 // the database.
 //
 // Please note that a MaxMind DB may map IPv4 networks into several locations
-// in in an IPv6 database. This iterator will iterate over all of these
+// in an IPv6 database. This iterator will iterate over all of these
 // locations separately.
 func (r *Reader) Networks() *Networks {
 	s := 4