Change URI to IRI after finding validation pattern

link.go

@@ -9,7 +9,7 @@ type Link struct {
 	*CommonAttributes
 	Title    Text        `xml:"title,attr,omitempty"`
 	Content  Content     `xml:"content"` // undefinedContent in RFC4287
-	Href     URI         `xml:"href,attr"`
+	Href     IRI         `xml:"href,attr"`
 	Rel      string      `xml:"rel,attr,omitempty"`
 	Type     MediaType   `xml:"type,attr,omitempty"`
 	HrefLang LanguageTag `xml:"hreflang,attr,omitempty"`
@@ -22,7 +22,7 @@ func NewLink(href string) (*Link, error) {
 		return nil, fmt.Errorf("error creating content element: %v", err)
 	}
 
-	return &Link{Href: URI(href), Content: content}, nil
+	return &Link{Href: IRI(href), Content: content}, nil
 }
 
 func (l *Link) Check() error {