Warning when you validate online code

When you try to validate with the four lines of code I gave you, it works fine when you validate the code as you stored it. However, when you try to validate it after you have uploaded, you may get a warning. I played around with it and changed
encoding="iso-8859-1"
to
encoding="UTF-8"

Here are some notes:
http://www.w3schools.com/XML/xml_encoding.asp