[MRESOLVER-104] maven-resolver-demo-maven-plugin uses reserved artifactId

This closes #73
diff --git a/maven-resolver-demos/maven-resolver-demo-maven-plugin/pom.xml b/maven-resolver-demos/maven-resolver-demo-maven-plugin/pom.xml
index 4104bf0..cf4224f 100644
--- a/maven-resolver-demos/maven-resolver-demo-maven-plugin/pom.xml
+++ b/maven-resolver-demos/maven-resolver-demo-maven-plugin/pom.xml
@@ -28,7 +28,7 @@
     <version>1.6.2-SNAPSHOT</version>
   </parent>
 
-  <artifactId>maven-resolver-demo-maven-plugin</artifactId>
+  <artifactId>resolver-demo-maven-plugin</artifactId>
   <packaging>maven-plugin</packaging>
 
   <name>Maven Artifact Resolver Demo Maven Plugin</name>