chore fixed (#921)

* chore fixed

common/serial/serial.go

@@ -5,7 +5,7 @@ import (
 	"io"
 )
 
-// ReadUint16 reads first two bytes from the reader, and then coverts them to an uint16 value.
+// ReadUint16 reads first two bytes from the reader, and then converts them to an uint16 value.
 func ReadUint16(reader io.Reader) (uint16, error) {
 	var b [2]byte
 	if _, err := io.ReadFull(reader, b[:]); err != nil {

common/serial/string.go

@@ -5,7 +5,7 @@ import (
 	"strings"
 )
 
-// ToString serialize an arbitrary value into string.
+// ToString serializes an arbitrary value into string.
 func ToString(v interface{}) string {
 	if v == nil {
 		return ""

common/session/session.go

@@ -86,7 +86,7 @@ type Sockopt struct {
 	Mark int32
 }
 
-// SetAttribute attachs additional string attributes to content.
+// SetAttribute attaches additional string attributes to content.
 func (c *Content) SetAttribute(name string, value string) {
 	if c.Attributes == nil {
 		c.Attributes = make(map[string]string)