Documentation revamp update

[Manuel Alcaraz Zambrano]

> Hi.

Hello,

> Just checked out latest commit from kde-qdoc-common "Add md4qt" to see if everything is fine...
> 
> Almost everything is fine. I guess you changed some CSS or similar thing. So on my "md4qt C++ Classes" page I see to wide "Contents" column, and too narrow data column.
> 
> Look https://drive.google.com/file/d/1UZ5hHyfhi5z0NNV9t4I5eb__PeMpExDF/view?usp=drive_link
> 
> I'd like to have line breaks on "Contents" column instead of data column.
> 
> I guess these changes was made here:
> 
> Make website responsive
> 
>     - Fixed layout on narrow screens.
>     - The sidebar is now sticky.
>     - Fixed some dark mode issues.
>     - Remove unused CSS.
> 
> Please have a look at it again on "md4qt C++ Classes" page example, not so good...

It seems I forgot to properly set the width of the columns because I didn't found any project with a detailed description. I've submitted a MR to fix that: <https://invent.kde.org/sdk/kde-qdoc-common/-/merge_requests/4>. There are other issues I have also seen on Chrome Mobile that don't happen on desktop browsers that I need to fix.

> Thank you.

Regards,
Manuel