chore: fix compat with latest doxia release

Author: slandelle

src/main/java/scala_maven/ScalaDocMojo.java

@@ -6,14 +6,14 @@
 
 import java.io.File;
 import java.util.*;
+import org.apache.maven.doxia.sink.Sink;
 import org.apache.maven.plugins.annotations.Execute;
 import org.apache.maven.plugins.annotations.LifecyclePhase;
 import org.apache.maven.plugins.annotations.Mojo;
 import org.apache.maven.plugins.annotations.Parameter;
 import org.apache.maven.plugins.annotations.ResolutionScope;
 import org.apache.maven.reporting.MavenReport;
 import org.apache.maven.reporting.MavenReportException;
-import org.codehaus.doxia.sink.Sink;
 import org.codehaus.plexus.util.StringUtils;
 import scala_maven_dependency.Context;
 import scala_maven_executions.JavaMainCaller;