minor #3267 Update advanced.rst (abdounikarim)
minor #3267 Update advanced.rst (abdounikarim)

This PR was submitted for the 3.x branch but it was merged into the 1.x branch instead.

Discussion
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Update advanced.rst

Hello,

I just updated the class name 😉

Commits
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e030bf6e Update advanced.rst

nicolas-grekas/Twig,twigphp/Twig,twigphp/Twig,nicolas-grekas/Twig,twigphp/Twig,nicolas-grekas/Twig,nicolas-grekas/Twig,nicolas-grekas/Twig