README: Offensive Computer Security (CIS 4930) FSU link is broken 

{
    "date": "2023-01-1",
    "free": true,
    "name": "Angela",
    "remark": "Received a 404 error on the CIS 4930 link.",
    "url": "https://www.cs.fsu.edu/~redwood/OffensiveComputerSecurity/"
}