changed css path

Author: Artyom Borisevich

basic.html

@@ -6,7 +6,7 @@
 	<meta http-equiv="X-UA-Compatible" content="ie=edge">
 	<title>How to start - connector - basic</title>
 	<script src="https://cdn.dhtmlx.com/scheduler/edge/dhtmlxscheduler.js" type="text/javascript"></script>
-	<link rel="stylesheet" href="https://cdn.dhtmlx.com/scheduler/edge/dhtmlxscheduler_material.css" type="text/css">
+	<link rel="stylesheet" href="https://cdn.dhtmlx.com/scheduler/edge/dhtmlxscheduler.css" type="text/css">
 	<style type="text/css">
 		html, body{
 			margin:0px;

recurring.html

@@ -6,7 +6,7 @@
 	<meta http-equiv="X-UA-Compatible" content="ie=edge">
 	<title>How to start - connector - recurring</title>
 	<script src="https://cdn.dhtmlx.com/scheduler/edge/dhtmlxscheduler.js" type="text/javascript"></script>
-	<link rel="stylesheet" href="https://cdn.dhtmlx.com/scheduler/edge/dhtmlxscheduler_material.css" type="text/css">
+	<link rel="stylesheet" href="https://cdn.dhtmlx.com/scheduler/edge/dhtmlxscheduler.css" type="text/css">
 	<style type="text/css" media="screen">
 		html, body{
 			margin:0px;