Prefer / or /app/* over /main in servlet examples

spring-framework-reference/src/beans-java.xml

@@ -204,10 +204,10 @@ public class AppConfig {
       </init-param>
   </servlet>
 
-  <!-- map all requests for /main/* to the dispatcher servlet -->
+  <!-- map all requests for /app/* to the dispatcher servlet -->
   <servlet-mapping>
       <servlet-name>dispatcher</servlet-name>
-      <url-pattern>/main/*</url-pattern>
+      <url-pattern>/app/*</url-pattern>
   </servlet-mapping>
 &lt;/web-app&gt;</programlisting></para>
     </section>