project-zomboid: add page

[Managor]

Checklist

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR contains at most 5 new pages.
• The PR is authored by me, or has been human-reviewed if it was created with AI or machine translation software.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known):
• Reference issue: #

[tldr-bot]

The build for this PR failed with the following error(s) at commit
792ee2b93fc2b96c1813a716a2c7d0cc4253c9e5:

pages/linux/project-zomboid.md:10: TLDR005 Example descriptions should end in a colon with no trailing characters

Please fix the error(s) and push again.