[MPOM-170] fixed versions order in GitHub compare url
diff --git a/src/site-docs/apt/index.apt.vm b/src/site-docs/apt/index.apt.vm
index 1a38484..2a54c24 100644
--- a/src/site-docs/apt/index.apt.vm
+++ b/src/site-docs/apt/index.apt.vm
@@ -116,15 +116,15 @@
 History
 
 #if( $project.version.endsWith( "SNAPSHOT" ) )
-  HEAD: {{{https://github.com/apache/maven-apache-parent/tree/HEAD/pom.xml}$project.version}}
+  master: {{{https://github.com/apache/maven-apache-parent/tree/master/pom.xml}$project.version}}
   ({{{https://gitbox.apache.org/repos/asf?p=maven-apache-parent.git;a=blobdiff;f=pom.xml;hb=master;hpb=apache-18}diff}},
-  {{{https://github.com/apache/maven-apache-parent/compare/HEAD...apache-18}commits}})
+  {{{https://github.com/apache/maven-apache-parent/compare/apache-18...master}commits}})
 #end
 #macro ( display $version $date )
 #**##set( $prev = $version - 1 )
 |  {{{https://github.com/apache/maven-apache-parent/tree/apache-$version/pom.xml}$version}}
 | ({{{https://gitbox.apache.org/repos/asf?p=maven-apache-parent.git;a=blobdiff;f=pom.xml;hb=apache-$version;hpb=apache-$prev}diff}},
-|  {{{https://github.com/apache/maven-apache-parent/compare/apache-$version...apache-$prev}commits}}) | $date |
+|  {{{https://github.com/apache/maven-apache-parent/compare/apache-$prev...apache-$version}commits}}) | $date |
 #end
 
 *--------------+------------+