small tweaks to notes page style

lib/slidenotes/notes.html

@@ -82,7 +82,7 @@
 
 		<div id="wrap-next-slide" class="slides">
 			<iframe src="/?receiver" width="640" height="512" id="next-slide"></iframe>
-			<span>UPCOMING</span>
+			<span>UPCOMING:</span>
 		</div>
 		<div id="notes"></div>