OrlyDumi on "[Plugin: Contact Form 7] Changing after submission URL"

Hi! At the moment after a user sends his question and clicks the send button he's being redirected to a random URL
http://nameofwebsite.com/contact-us#wpcf7-f261-p544-o1

How can I change to URL so it would look more like -
http://nameofwebsite.com/contact-us/thank-you
or something similar?

Thank you for you help!

https://wordpress.org/plugins/contact-form-7/