Small bug fix

category.go

@@ -13,7 +13,7 @@ type Category struct {
 	Label  string `xml:"label,attr,omitempty"`
 }
 
-// NewCategory creates a new Category. It returns a *Category and an error.
+// NewCategory creates a new Category. It returns a *Category.
 func NewCategory(term string) *Category {
 	return &Category{Term: term}
 }

link.go

@@ -16,8 +16,8 @@ type Link struct {
 	Length   uint        `xml:"length,attr,omitempty"`
 }
 
-// NewLink creates a new Link. It returns a *Link and an error.
+// NewLink creates a new Link. It returns a *Link.
-func NewLink(href, content string) *Link {
+func NewLink(href string) *Link {
 	return &Link{Href: IRI(href)}
 }