Support multiple attributes in a single block

[wouterj]

Fixes #194

@javiereguiluz this contains one change for all attribute highlighting: the whole #[...] section is now wrapped in a single .hljs-meta element. This means that everything without style now also gets the green text color on symfony.com (e.g. parenthesis and commas).

[javiereguiluz]

Sorry for the late reply 🙏 This is really nice and solves the reported edge-case. About the parenthesis and commas getting the same highlight as the whole .hljs-meta element, I think it's not bad at all. Thanks al ot Wouter!

[javiereguiluz]

This was released in this new tag:
https://github.com/symfony-tools/docs-builder/releases/tag/v0.27.2

And, it's already deployed in production and the blog post shows the new behavior:
https://symfony.com/blog/new-in-symfony-7-4-improved-invokable-commands#:~:text=If%20your%20interactions%20only%20involve%20asking%20for%20missing%20argument%20or%20option%20values

Thanks!