added plugin IT to documentation of generated project from this archetype

git-svn-id: https://svn.apache.org/repos/asf/maven/archetypes/trunk@1824917 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/maven-archetype-plugin/src/site/apt/index.apt.vm b/maven-archetype-plugin/src/site/apt/index.apt.vm
index 5d500be..c05e040 100644
--- a/maven-archetype-plugin/src/site/apt/index.apt.vm
+++ b/maven-archetype-plugin/src/site/apt/index.apt.vm
@@ -35,10 +35,15 @@
 project
 |-- pom.xml
 `-- src
-    `-- main
-        `-- java
-            `-- $package
-                `-- MyMojo.java
+    |-- main
+    |   `-- java
+    |       `-- $package
+    |           `-- MyMojo.java
+    `-- it
+        |-- simple-it
+        |   |-- pom.xml
+        |   `-- verify.groovy
+        `-- settings.xml
 
 +----+