CLI: Update docs for 'aspire setup' folded into 'aspire doctor'

[maddymontaquila]

Context

In dotnet/aspire#14599 (targeting 13.2), the aspire setup command was folded into aspire doctor. The doctor command now auto-extracts the embedded bundle when running from a bundled CLI binary, before performing environment checks.

The setup command is now hidden but still works for backward compatibility.

What needs updating

Any aspire.dev documentation that references:

• aspire setup → should use aspire doctor instead
• aspire setup --force → should use aspire doctor (doctor handles extraction automatically)

Other CLI changes in 13.2

For completeness, here are the other CLI option changes that may affect docs:

• --debug-level/-v → --log-level/-l (old flags still work as hidden backward-compat)
• -v is now a short alias for --version (standard CLI convention)
• --watch on describe → --follow/-f
• --format option description standardized to 'Output format (Table or Json).' across all commands