docs: Fix documentation and browser back button issue

I couldn't find any other issue or discussion thread but I'm new to Node and therefore spending a lot of time with the docs. It's quite annoying that the browser back button is not working when one has jumped to an anchor within a page and then wanting to go back to the index with the browser back functionality. Removing the suggested line fixes the issue. I don't really know what it's good for, so if anyone could tell me and propose a different fix I'd be happy too.