Update building docs to use m2 instead, now that the m1 build has been removed.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/scxml/branches/J6@1132832 13f79535-47bb-0310-9956-ffa450edef68

src/site/xdoc/building.xml

diff --git a/src/site/xdoc/building.xml b/src/site/xdoc/building.xml
index b2c3089..27c423b 100644
--- a/src/site/xdoc/building.xml
+++ b/src/site/xdoc/building.xml
@@ -30,22 +30,21 @@
 </p>
 </section>
 <!-- ================================================== -->
-<section name="Maven Goals">
+<section name="Maven 2 Goals">
   <p>
-    To build a jar file, change into SCXML's root directory and run "maven jar".
+    To build a jar file, change into SCXML's root directory and run "mvn package".
     The result will be in the "target" subdirectory.
   </p>
   <p>
-    To build the Javadocs, run "maven javadoc".
+    To build the Javadocs, run "mvn javadoc:javadoc".
     The result will be in "target/docs/apidocs".
   </p>
   <p>
-    To build the full website, run "maven site". The result will be in "target/docs".
+    To build the full website, including Javadocs, run "mvn site".
   </p>
   <p>
-    To build the site, you need Maven 1.0.2 and version 1.9.2 of the maven-xdoc-plugin installed.
+    Maven 2.0.8 and above is recommended.
   </p>
-
 </section>
 <!-- ================================================== -->
 <section name="Ant Goals">