Changed comments a bit

commonAttributes.go

@@ -22,8 +22,8 @@ func (c *CommonAttributes) AddAttribute(name, value string) {
 	addToSlice(&c.UndefinedAttributes, &xml.Attr{Name: xml.Name{Local: name}, Value: value})
 }
 
-// DeleteAttribute deletes the attribute from the CommonAttributes. It return an
-// error.
+// DeleteAttribute deletes the attribute at index from the CommonAttributes. It
+// return an error.
 func (c *CommonAttributes) DeleteAttribute(index int) error {
 	if err := deleteFromSlice(&c.UndefinedAttributes, index); err != nil {
 		return fmt.Errorf("error deleting undefined attribute %v from common attributes %v: %v", index, c, err)