Very exciting! 
ChanceOfFire made a guide as to how to change the “Make Your Own…” tagline at the end of the HTML file here.
Open up index.html (previously output.html) in notepad. Look for this line:
<p><a id="makeyourowngames" href="https://www.choiceofgames.com/make-your-own-games/choicescript-intro/">Make your own games with ChoiceScript</a></p>Delete this line or shift it downwards by putting
<br>multiple times in front of it.
You can also add text (plain text) or adding links (a href).