Fix StyLua issues

[victorpopkov]

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Is your feature request related to a problem? Please describe.

After merging #6, all warnings related to StyLua should get fixed. It would be easier to deal with StyLua at first, before dealing with Luacheck issues.

Describe the solution you'd like

Fix StyLua issues.

Describe alternatives you've considered

If applicable, add a clear and concise description of any alternative solutions or features you've considered.

Additional context

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