[LazyImage] Fix code block rendering in docs

[mttsch]

Q	A
Bug fix?	no
New feature?	no
Issues
License	MIT

[mttsch]

Currently renders incorrectly on website (https://symfony.com/bundles/ux-lazy-image/current/index.html#customizing-images-fetching):

I did not check how it will render after this change!

[Kocal]

Hi, I've used :: because the linter was not happy about it:

Please do not use ".. code-block:: php", use "::" instead.

And so you have the same issue https://github.com/symfony/ux/actions/runs/9298650239/job/25590944633?pr=1876

IDK how to fix it properly tho

[Kocal]

Hum, maybe removing the newline between .. :: and namespace App\BlurHash;?

[mttsch]

When checking for existing examples, I mistakenly used examples from the vendor folder. Now I searched for existing examples that are not in vendor, though I still have not checked the built result.

[kbond]

Thank you Matthias.

[Kocal]

When checking for existing examples, I mistakenly used examples from the vendor folder. Now I searched for existing examples that are not in vendor, though I still have not checked the built result.

Looks like you were right, the code block is now properly displayed, thanks :)