Fixing onos-archetypes-test error

Change-Id: I12877d0012b50392a36e0d819e7b787066503dfc
diff --git a/tools/package/archetypes/api/src/main/resources/archetype-resources/pom.xml b/tools/package/archetypes/api/src/main/resources/archetype-resources/pom.xml
index 343eff7..70d4fc4 100644
--- a/tools/package/archetypes/api/src/main/resources/archetype-resources/pom.xml
+++ b/tools/package/archetypes/api/src/main/resources/archetype-resources/pom.xml
@@ -3,7 +3,7 @@
 #set( $format = $dummy.getClass().forName("java.text.SimpleDateFormat").newInstance() )
 #set( $pattern = $format.applyPattern("yyyy") )
 #set( $year = $format.format($date) )
-?xml version="1.0" encoding="UTF-8"?>
+<?xml version="1.0" encoding="UTF-8"?>
 <!--
   ~ Copyright ${year} Open Networking Laboratory
   ~