using a test-jar need most of the time to use scope test for this dependency

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1158607 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/site/apt/usage.apt.vm b/src/site/apt/usage.apt.vm
index e1f29ed..129314c 100644
--- a/src/site/apt/usage.apt.vm
+++ b/src/site/apt/usage.apt.vm
@@ -170,6 +170,7 @@
       <artifactId>artifactId</artifactId>
       <type>test-jar</type>
       <version>version</version>
+      <scope>test</scope>
     </dependency>
   </dependencies>
   ...