Add-on fixes for linux / privileged

[TheNewCat777]

Documentation Improvements

Fixed Technical Errors

• Corrected typo: "UPD 514" → "UDP 514"
• Fixed typo: "NIntegration API" → "Integration API"
• Added missing space: "openSUSE42" → "openSUSE 42"
• Fixed spacing: "Net BIOSname" → "NetBIOS name"

Enhanced Formatting

• Added proper markdown structure with consistent headings and subheadings
• Wrapped all code snippets, commands, and file paths in code blocks for better readability
• Improved spacing and line breaks for better document structure
• Made port numbers consistently bold throughout the documents
• Standardized code block formatting for configuration examples

Added Missing Technical Steps

• Added rsyslog installation verification and installation commands for both RHEL and Ubuntu sections
• Included appropriate package managers for different distributions:
  • yum for RHEL 6-8
  • dnf for RHEL 9+
  • apt-get for Ubuntu/Debian
• Added service status verification commands
• Added sudo prefix to all commands requiring elevated privileges
• Updated service management commands:
  • service for RHEL 6-8 (legacy systems)
  • systemctl for RHEL 9+ and modern Ubuntu (systemd-based systems)

Improved Consistency

• Standardized formatting across both "Linux Generic Syslog" and "Privileged User Monitoring" documents
• Made both documents follow the same structure and style guidelines