Fix punctuation in ForceLimitMode.yaml

[MixeroTN]

Changes

Removed the additional whitespaces and the dot. This isn't visible on the website, however, I found it while using the Luau Language Server:

Checks

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[github-actions]

Hi @MixeroTN, thanks so much for helping improve the Roblox creator documentation! Our technical writing team will review your pull request soon. In the meantime, please ensure you've read through the README.md, contribution guidelines, and style recommendations.