Improve Error Troubleshooting with Log Documentation

Description: This merge request adds clear documentation to assist users in effectively checking Alliance Auth logs for errors.

The documentation includes:

Log File Breakdown: A description of each log file (allianceauth.log, worker.log, beat.log, gunicorn.log) and the types of information they contain.

Troubleshooting Steps: Step-by-step instructions on how to locate, access, and search log files for errors.

Tips: Guidance on filtering logs, using debug mode, and seeking help from the community.

Example: A practical example of how to troubleshoot a potential issue (e.g., failed discord tasks) using log analysis.

Benefits: Enhances users understanding of how Alliance Auth logging works. Makes it easier to provide assistance to others by referencing the documentation.