docs: restore prebuilt seid binary install option (v6.6.1 ships binaries) - #55

Running Vale across on the following files affected by this PR:

- evm/installing-seid-cli.mdx
- node/index.mdx
- node/node-operators.mdx

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evm/installing-seid-cli.mdx:
	- 84:4     Use sentence case for headings: 'Command Overview'.
	- 132:4    Use sentence case for headings: 'Adding a Wallet'.
	- 183:4    Use sentence case for headings: 'EVM Wallet Compatibility'.
	- 185:5    Use sentence case for headings: 'Understanding Coin Types'.
	- 192:5    Use sentence case for headings: 'Creating an EVM-Compatible Wallet'.
	- 219:5    Use sentence case for headings: 'Importing an Existing EVM Wallet'.
	- 245:4    Use sentence case for headings: 'Managing Wallets'.
	- 284:4    Use sentence case for headings: 'Deleting Wallets'.

node/index.mdx:
	- 22:4     Use sentence case for headings: 'Network Versions'.
	- 28:4     Use sentence case for headings: 'Hardware Requirements'.
	- 37:4     Use sentence case for headings: 'Installation & Setup Steps'.
	- 50:8     Use sentence case for headings: '2. Install Essential Packages'.
	- 56:8     Use sentence case for headings: '3. Synchronize System Time'.
	- 64:7     Use sentence case for headings: 'Install Go'.
	- 71:8     Use sentence case for headings: 'Installation Steps'.
	- 177:7    Use sentence case for headings: 'Initialize Chain Files'.
	- 205:7    Use sentence case for headings: 'Configure App Settings'.
	- 235:6    Use sentence case for headings: 'Archive Node Setup'.
	- 249:6    Use sentence case for headings: 'Mempool Configuration'.
	- 337:7    Use sentence case for headings: 'Monitoring & Troubleshooting'.
	- 373:4    Use sentence case for headings: 'Node Resources'.
	- 375:5    Use sentence case for headings: 'Node Setup'.
	- 389:5    Use sentence case for headings: 'Advanced Operations'.

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'.
	- 1352:4    Use sentence case for headings: 'Database Management'.
	- 1377:5    Use sentence case for headings: 'SeiDB Configuration'.
	- 1451:5    Use sentence case for headings: 'Giga Storage and Giga Executor'.
	- 1495:5    Use sentence case for headings: 'Database Maintenance'.
	- 1522:4    Use sentence case for headings: 'Service Management'.
	- 1524:5    Use sentence case for headings: 'Systemd Commands'.
	- 1543:5    Use sentence case for headings: 'Log Management'.
	- 1564:4    Use sentence case for headings: 'Update Procedures'.
	- 1574:5    Use sentence case for headings: 'Minor Updates'.
	- 1616:5    Use sentence case for headings: 'Major Updates'.
	- 1660:4    Use sentence case for headings: 'Performance Optimization'.
	- 1668:5    Use sentence case for headings: 'Memory Management (sysctl tuning)'.
	- 1682:5    Use sentence case for headings: 'Network Stack Optimization'.
	- 1696:5    Use sentence case for headings: 'Storage Optimization'.
	- 1706:4    Use sentence case for headings: 'Backup and Recovery'.
	- 1708:5    Use sentence case for headings: 'Regular Backups'.
	- 1727:5    Use sentence case for headings: 'Recovery Procedure'.
	- 1745:4    Use sentence case for headings: 'Security Considerations'.


Found 47 suggested changes across 3 files in 600.21ms