I have checked the errors in LinkCheck step and the errors thrown. All of the internal links thrown as error are working correctly on the live site and Github interface. I could not find a way to fix them.

@umutphp this PR rewraps <aside>s to one line, and as these have mixed HTML and markup, I think the renderer gets horribly confused, resulting in some escaped HTML being output in the asides, and (though I'm not sure why) subsequent internal anchors with non-ascii characters being generated incorrectly. I corrected a few of the asides in 98e963b to get one of the reported broken links to go away. If you fix the rest tests will pass and all of the asides will be rendered correctly (without escaped HTML).

It looks like this came up before in #1112 (comment)

Hi @mlinksva,

Many thanks for the feedback :).

I fixed the broken "aside" tags and all the checks passed.