Fix typo on homepage

Ref https://github.com/tastejs/todomvc/commit/935aed054725ecb26c4862fa7d0fa309b79d3140#commitcomment-10150439

index.html

@@ -336,7 +336,7 @@
 					<h2>New in 1.3</h2>
 					<ul class="whats-new">
 						<li>We now have 64 applications.
-							<label class="link" for="news-expander">New since 1.2 ▼</label>
+							<label class="link" for="news-expander">New since 1.3 ▼</label>
 							<input type="checkbox" id="news-expander">
 							<ul class="collapsed" id="new-apps">
 								<li><a href="examples/angular-dart/web/">AngularDart</a></li>