updating the footer anchor to the demo URL

Author: Adam Culpepper

docs/index.html

@@ -591,7 +591,7 @@ <h2>Tests</h2>
 		<footer>
 			<div class="d-lg-flex">
 				<div class="d-block d-md-inline-block mb-3 mb-md-0">
-					<a href="/">Pure CSS Float Labels</a>
+					<a href="https://adamculpepper.github.io/pure-css-float-labels">Pure CSS Float Labels</a>
 				</div>
 				<span class="ml-2 hidden-sm-down">is</span>
 				<span class="ml-2"><i class="fas fa-code"></i><span class="sr-only">built</span></span>