Use correct scm-tag for the current branch

Author: adangel

pom.xml

@@ -20,7 +20,7 @@
         <connection>scm:git:git://github.com/pmd/pmd-designer.git</connection>
         <developerConnection>scm:git:ssh://[email protected]/pmd/pmd-designer.git</developerConnection>
         <url>https://github.com/pmd/pmd-designer</url>
-        <tag>HEAD</tag>
+        <tag>6.27-dev</tag>
     </scm>
     <ciManagement>
         <url>https://travis-ci.org/pmd/pmd-designer</url>