Updated sample context files to point at 2.0.1 schema

samples/tutorial/src/main/webapp/WEB-INF/applicationContext-security.xml

@@ -10,7 +10,7 @@
     xmlns:beans="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
-                        http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-2.0.xsd">
+                        http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-2.0.1.xsd">
 
 	<global-method-security secured-annotations="enabled">
 		<!-- AspectJ pointcut expression that locates our "post" method and applies security that way