Changing FAQ to Guidelines

I’ve done this on my site but have just noticed that the “Guidelines” link goes to the /faq URL.

Is there any way of changing this to /guidelines (which incidentally does work when you type it into the browser bar)?

I’ve tried changing the faq url setting (“If you have a FAQ hosted elsewhere that you want to use, provide the full URL here.”). It accepts the relative URL but adds a second “Guidelines” button/link at the top of the page.