minor #3435 Fix small typo in docs (apfelbox)
minor #3435 Fix small typo in docs (apfelbox)

This PR was merged into the 2.x branch.

Discussion
----------

Fix small typo in docs

Commits
-------

7139e71c Fix small typo

twigphp/Twig,twigphp/Twig,twigphp/Twig