Keep same look & feel between all tile grids in the docs

[IlCallo]

Description
Clearly and concisely explain the problem.
You can mention unclear or missing information, typos, grammatical mistakes, etc.
Any contributions and suggestions are welcome!

The content grid layout of the docs section differs from the one we adopted for the main page 'welcome to quasar docs' so we need to improve this last page in order to make the passage between those pages more seamingless;

Website Section URL
Website live preview, paste the page URL or section name (eg. Docs, if it happens on all docs page) below.

https://quasar.beget.it/docs

[IlCallo]

@NiccoloMenozzi I think this was an issue you originally wrote and I copied it over, can you explain it better?