[skip ci] Update llms.md

[bbeggsTT]

Ticket

N/A

Problem description

Order of sections was incorrect.

What's changed

Section order corrected.

Checklist

• All post commit CI passes
• Blackhole Post commit CI passes (if applicable)
• Model regression CI passes (if applicable)
• Device performance regression CI passes (if applicable)
• (For models and ops writers) Full new models tests CI passes (if applicable)
• New/Existing tests provide coverage for changes