docs: replaced a link in the documentation that didn't work

[Olexandr88]

CHANGELOG

Does this branch warrant an entry to the CHANGELOG?

• [ ] Yes
• [ ] No

Dependencies

none

Requirements

If you have made any visual changes to the GUI. Make sure you have:

• [ ] Tested on iOS device
• [ ] Tested on Android device
• [ ] Tested on small-screen device (iPod Touch)
• [ ] Tested on large-screen device (tablet)