Streamline type check in content constructs

inlineTextContent.go

@@ -3,7 +3,6 @@ package atom
 import (
 	"errors"
 	"fmt"
-	"reflect"
 )
 
 type InlineTextContent struct {
@@ -19,11 +18,12 @@ func newInlineTextContent(mediaType string, content any) (*InlineTextContent, er
 		return nil, fmt.Errorf("media type %v incompatible with inline text content", mediaType)
 	}
 
-	if reflect.TypeOf(content).Kind() != reflect.String {
+	text, ok := content.(string)
+	if !ok {
 		return nil, fmt.Errorf("content type %T incompatible with inline text content", content)
 	}
 
-	return &InlineTextContent{Type: mediaType, Text: content.(string)}, nil
+	return &InlineTextContent{Type: mediaType, Text: text}, nil
 }
 
 // isContent checks whether the InlineTextContent is a Content. It returns a