replace with index method

src/main/java/org/codelibs/fess/app/web/help/HelpAction.java

@@ -39,7 +39,7 @@ public class HelpAction extends FessSearchAction {
     //                                                                      ==============
 
     @Execute
-    public HtmlResponse help(final HelpForm form) {
+    public HtmlResponse index(final HelpForm form) {
         return asHtml(path_HelpJsp).renderWith(data -> {
             buildLabelParams(form.fields);
             buildInitParams();

src/main/java/org/codelibs/fess/app/web/osdd/OsddAction.java

@@ -40,7 +40,7 @@ public class OsddAction extends FessSearchAction {
     //                                                                      ==============
 
     @Execute
-    public HtmlResponse osdd(final OsddForm form) {
+    public HtmlResponse index(final OsddForm form) {
         searchAvailable();
         openSearchHelper.write(LaResponseUtil.getResponse());
         return null;