docs: align Go requirements with source modules - #58

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

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

Attempting to initialize Vale linter...
Customer vale configuration detected. Attempting to sync packages...
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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'.
	- 74:8     Use sentence case for headings: 'Installation Steps'.
	- 185:7    Use sentence case for headings: 'Initialize Chain Files'.
	- 213:7    Use sentence case for headings: 'Configure App Settings'.
	- 243:6    Use sentence case for headings: 'Archive Node Setup'.
	- 257:6    Use sentence case for headings: 'Mempool Configuration'.
	- 345:7    Use sentence case for headings: 'Monitoring & Troubleshooting'.
	- 381:4    Use sentence case for headings: 'Node Resources'.
	- 383:5    Use sentence case for headings: 'Node Setup'.
	- 397:5    Use sentence case for headings: 'Advanced Operations'.

node/seictl.mdx:
	- 23:5     Use sentence case for headings: 'Pre-built Binaries (Recommended)'.
	- 90:6     Use sentence case for headings: 'Verify Download (Optional)'.
	- 102:5    Use sentence case for headings: 'Build from Source'.
	- 124:5    Use sentence case for headings: 'Install via Go'.
	- 136:5    Use sentence case for headings: 'Global Options'.
	- 142:5    Use sentence case for headings: 'Patch Command'.
	- 177:5    Use sentence case for headings: 'Genesis Commands'.
	- 208:5    Use sentence case for headings: 'Config Commands'.
	- 244:4    Use sentence case for headings: 'Configuration Targets'.
	- 280:4    Use sentence case for headings: 'Merge Patch Behavior'.


Found 33 suggested changes across 3 files in 1208.81ms