Fix Tasker list settings help button

app/src/main/java/org/tasks/locale/ui/activity/TaskerSettingsActivity.java

@@ -124,6 +124,11 @@ public final class TaskerSettingsActivity extends AbstractFragmentPluginPreferen
     component.inject(this);
   }
 
+  @Override
+  protected String getHelpUrl() {
+    return "http://tasks.org/help/tasker";
+  }
+
   @Override
   public boolean onMenuItemClick(MenuItem item) {
     switch (item.getItemId()) {
@@ -131,6 +136,6 @@ public final class TaskerSettingsActivity extends AbstractFragmentPluginPreferen
         finish();
         return true;
     }
-    return onOptionsItemSelected(item);
+    return super.onMenuItemClick(item);
   }
 }