Update server.xml

Author: AaronJhaj

etc/config/liberty/server.xml

@@ -3,7 +3,7 @@
     <!-- Enable features -->
     <featureManager>
         <feature>cicsts:core-1.0</feature>
-        <feature>cicsts:link-1.0</feature>
+        <feature>servlet-4.0</feature>
     </featureManager>
 
     <!-- Default HTTP End Point -->
@@ -13,4 +13,4 @@
     <config monitorInterval="5s" updateTrigger="polled" />
     <applicationMonitor updateTrigger="disabled" dropins="dropins"
         dropinsEnabled="false" pollingRate="5s" />
-</server>
+</server>