[CRAIL-46] Adding incubating in the landing text

It required a bit of modification in the left/right
padding in the box to keep the paragraph in 2 lines.

site/css/bootstrap.min.css

@@ -3782,8 +3782,8 @@ a.list-group-item.active>.badge,.nav-pills>.active>a>.badge {
 		padding-bottom:48px
 	}
 	.container .jumbotron {
-		padding-right:60px;
-		padding-left:60px
+		padding-right:50px;
+		padding-left:50px
 	}
 	.jumbotron h1 {
 		font-size:63px

site/index.html

@@ -4,7 +4,7 @@
 notitle: true
 ---
 <div class="jumbotron">
-<h4>Apache Crail is a high-performance distributed data store designed for fast sharing of ephemeral data in distributed data processing workloads</h4>
+<h4>Apache Crail (Incubating) is a high-performance distributed data store designed for fast sharing of ephemeral data in distributed data processing workloads</h4>
 <p><a class="btn btn-success" href="download/">Download Now</a></p>
 </div>