Make comments more useful

link.go

@@ -17,7 +17,7 @@ type Link struct {
 	Length   uint   `xml:"length,attr,omitempty"`
 }
 
-// NewLink creates a new Link. It returns a *Link.
+// NewLink creates a new Link. It takes in the string href and returns a *Link.
 func NewLink(href string) *Link {
 	return &Link{
 		CommonAttributes: NewCommonAttributes(),