minor #1581 Adding example with ``not`` for ``if`` (InFog)
minor #1581 Adding example with ``not`` for ``if`` (InFog)

This PR was merged into the 1.16-dev branch.

Discussion
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Adding example with ``not`` for ``if``

I could not find an example with ``not``, so I added it here.

Commits
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4a75e40 Adding example with ``not`` for ``if``

dkarvounaris/Twig,hason/Twig,craue/Twig,jamessingizi/Twig,nicolas-grekas/Twig,framewr/Twig,hason/Twig,huang53798584/Twig,derickr/Twig,bocharsky-bw/Twig,hhamon/Twig,robregonm/Twig,robregonm/Twig,Tobion/Twig,derickr/Twig,moufmouf/Twig,znerol/Twig,twigphp/Twig,fsw/Twig,moltin/Twig,moufmouf/Twig,bocharsky-bw/Twig,nicolas-grekas/Twig,framewr/Twig,gencer/Twig,bocharsky-bw/Twig,robregonm/Twig,hhamon/Twig,gamernetwork/Twig,jamessingizi/Twig,gamernetwork/Twig,nicolas-grekas/Twig,Rvanlaak/Twig,moltin/Twig,jamessingizi/Twig,iKwinto/Twig,gencer/Twig,nicolas-grekas/Twig,moltin/Twig,iKwinto/Twig,znerol/Twig,hhamon/Twig,fsw/Twig,dkarvounaris/Twig,huang53798584/Twig,huang53798584/Twig,apishka/templater,gamernetwork/Twig,derickr/Twig,fsw/Twig,twigphp/Twig,moufmouf/Twig,Tobion/Twig,znerol/Twig,hason/Twig,nicolas-grekas/Twig,framewr/Twig,Rvanlaak/Twig,twigphp/Twig,dkarvounaris/Twig,craue/Twig,loi-chuanoi/Twig,iKwinto/Twig,Tobion/Twig,Rvanlaak/Twig,apishka/templater