TODO: Clean up description of logcheck

[zweilosec]

TODO: Clean up description of logcheck

• [ ] Description is a mass block of text. Add formatting,
• [ ] Put code into code blocks
• [ ] Ensure clarity and brevity

• https://github.com/zweilosec/Infosec-Notes/blob/master/linux-1/hardening-and-setup.md#with-logcheck