Fixing typos in help files v2

[hexagonrecursion]

• This is a revised version of https://github.com/colobot/colobot-data/pull/43

[github-actions[bot]]

Hey! This pull request targets the master branch. You should probably target dev instead. Make sure to read the contributing guidelines and edit the target branch if necessary.

[hexagonrecursion]

Thanks, @tomangelo2 👍 🚀 🎉