feat: add no gap to Flex example

[BlackySoul]

Описание

Добавляем в пример возможность убрать проп gap

Release notes

Документация

• Flex: добавили возможность не задавать свойство gap

[github-actions]

👀 Docs deployed

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• ❌ Storybook

Commit a8c7fd0

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.37%. Comparing base (e985501) to head (a8c7fd0).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7899      +/-   ##
==========================================
+ Coverage   95.34%   95.37%   +0.03%     
==========================================
  Files         377      378       +1     
  Lines       11054    11154     +100     
  Branches     3673     3706      +33     
==========================================
+ Hits        10539    10638      +99     
- Misses        515      516       +1     

Flag	Coverage Δ
unittests	95.37% <ø> (+0.03%)	⬆️

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✅ v7.0.0-beta.2 🎉

[vkcom-publisher]

✅ v7.0.0 🎉