Replace deprecated method (#1231)

Author: elharo

src/main/java/org/apache/maven/plugins/javadoc/JavadocReport.java

@@ -293,7 +293,7 @@ protected void doExecute() throws MojoExecutionException, MojoFailureException {
 
         File outputDirectory = new File(getOutputDirectory());
 
-        String filename = getOutputName() + ".html";
+        String filename = getOutputPath() + ".html";
 
         Locale locale = SiteTool.DEFAULT_LOCALE;