minor #3415 Update format_time.rst (ThomasLandauer)
minor #3415 Update format_time.rst (ThomasLandauer)

This PR was merged into the 2.x branch.

Discussion
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Update format_time.rst

Adding link to format_datetime - same as https://github.com/twigphp/Twig/pull/3414

Commits
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51366923 Update format_time.rst

twigphp/Twig,twigphp/Twig,twigphp/Twig