quickstart should use standard doctype

git-svn-id: https://svn.apache.org/repos/asf/click/trunk/click@1083471 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/template/WebContent/border-template.htm b/template/WebContent/border-template.htm
index e82f9bd..9702152 100644
--- a/template/WebContent/border-template.htm
+++ b/template/WebContent/border-template.htm
@@ -1,3 +1,4 @@
+<!doctype html>

 <html>

 <head>

 <title>Click Quick Start - $title</title>