I have gone through the link mentioned in https://github.com/joomla/docs.joomla.org documentation.
All the links on the website(https://docs-next.joomla.org) are working fine.
Am I understanding wrong?

yes you are mistaken.

@brianteeman, I have also gone through [https://github.com/joomla/docs.joomla.org] documentation, and there are no such links as you mentioned above☝️

This repository is for issues with the Joomla CMS. If I was reporting that the links were broken on another repository then I would have reported it there. As I didn't then clearly I am referring to a bug in Joomla CMS. Thats why you can't find the liniks when you are looking in the wrong place. Although why you would even look at that github repository I have no idea as no where did I mention it.

/me has no patience to deal with this

Reminder again that this needs to be resolved.
Please raise this to a release blocker

I hope this is fixed before any rc2

In 4.2 the button code looks like this:

<button class="button-help btn btn-info" type="button" onclick="Joomla.popupWindow('https:\/\/help.joomla.org\/proxy?keyref=Help42:Users&amp;lang=en', 'Help', 700, 500, 1)" title="Opens in a new window">
    <span class="icon-question" aria-hidden="true"></span>
    Help</button>

In 4.3 it looks like this:

<button class="button-help btn btn-info js-toolbar-help-btn" data-url="https:\/\/help.joomla.org\/proxy?keyref=Help42:Users&amp;lang=en" data-title="Help" data-width="700" data-height="500" data-scroll="1" type="button" title="Opens in a new window">
    <span class="icon-question" aria-hidden="true"></span>
    Help</button>

For the latter, the back slashes in the url need to be removed. Test it by hard-coding the minor version of $helpurl in configuration.php

@ceford no the issue I am reporting is nothing to do with that. It is simply a 1 line change that needs to be made on the help site so that the proxy supports 4.3

OK. I created a separate issue.

:( grrh

Thanks @wilsonge