Broken Dropdown Menu

I have just created the above new page and given a link to it from the ‘Roundhouse’ dropdown menu. If you hover over the ‘Roundhouse’ link, rather than it showing linked text and an image on the RHS like all the others you will see ‘Upload File’ followed by a list of items at the bottom that come from this new page.

The Developer of the Megamenu plugin has looked at the markup and has concluded that some HTML has been injected into the menu by the Memphis Docs plugin itself. He also concludes that it doesn’t seem to be related to the Shortcode on that page since it happens on multiple pages and looks more like it’s a setting in the plugin that adds this markup to the submenu.

Can you please take a look and let me know what you think and suggest how we might resolve.

Many thanks

The page I need help with: [log in to see the link]