fix plugin goal prefix (fixes #337, via #338)

Author: zhmaeff

pom.xml

@@ -84,7 +84,7 @@
                     <artifactId>maven-plugin-plugin</artifactId>
                     <version>${maven-plugin.version}</version>
                     <configuration>
-                        <goalPrefix>prefix</goalPrefix>
+                        <goalPrefix>allure</goalPrefix>
                         <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>
                     </configuration>
                     <executions>