docs(node): confirm v6.6 SC migration model, add version-scoping note for operators - #39

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- node/node-operators.mdx

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node/node-operators.mdx:
	- 12:4      Use sentence case for headings: 'Configuration Management'.
	- 14:5      Use sentence case for headings: 'Directory Structure'.
	- 34:5      Use sentence case for headings: 'Essential Configuration Parameters'.
	- 36:6      Use sentence case for headings: 'Network Settings (config.toml)'.
	- 62:6      Use sentence case for headings: 'Application Settings (app.toml)'.
	- 100:5     Use sentence case for headings: 'Default Configurations'.
	- 1366:4    Use sentence case for headings: 'Database Management'.
	- 1391:5    Use sentence case for headings: 'SeiDB Configuration'.
	- 1476:5    Use sentence case for headings: 'Giga Storage and Giga Executor'.
	- 1540:5    Use sentence case for headings: 'Database Maintenance'.
	- 1567:4    Use sentence case for headings: 'Service Management'.
	- 1569:5    Use sentence case for headings: 'Systemd Commands'.
	- 1588:5    Use sentence case for headings: 'Log Management'.
	- 1609:4    Use sentence case for headings: 'Update Procedures'.
	- 1611:5    Use sentence case for headings: 'Minor Updates'.
	- 1629:5    Use sentence case for headings: 'Major Updates'.
	- 1653:4    Use sentence case for headings: 'Performance Optimization'.
	- 1661:5    Use sentence case for headings: 'Memory Management (sysctl tuning)'.
	- 1675:5    Use sentence case for headings: 'Network Stack Optimization'.
	- 1689:5    Use sentence case for headings: 'Storage Optimization'.
	- 1699:4    Use sentence case for headings: 'Backup and Recovery'.
	- 1701:5    Use sentence case for headings: 'Regular Backups'.
	- 1720:5    Use sentence case for headings: 'Recovery Procedure'.
	- 1738:4    Use sentence case for headings: 'Security Considerations'.


Found 24 suggested changes across 1 files in 476.86ms