@ismail1432 I've reviewed your contribution and made some fixes. You may be thinking "he changed everything I contributed!!" but I hope you understand why we made those changes:

• Syntax issues: Symfony Docs use a very strict format called reStructuredText. That's why the underline of a heading must be of the same length of the heading, the code blocks that contain PHP don't need a .. code-block directive, etc.
• Content issues: the example you took from the blog post was a bit complex (my bad!) so I've simplified the route config to make things easier to understand.
• Missing .. versionadded directive: it's needed when we document a new feature so the reader knows when a feature was introduced.

In any case, thanks for your contribution and we hope to get more contributions from you in the future. Thanks!

No worries @javiereguiluz ! I totally understand.
Thanks for the feedback