One of the easiest ways to contribute is through finding and reporting errors like these.
The best way to ensure someone picks this up and makes the change is to do it yourself. That’s greatly appreciated and it can be an on ramp to more contributions.
At the bottom of the page there is a “Edit this page on GitHub”. If you click that you will be guided through the process to make the change to the docs and submit the change for review (called a Pull Request). See [Wiki] How to contribute to the openHAB Documentation for more details than necessary.