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[Easy] Fix numbering typo in Llama README docs (#9936)

### Summary
Numbering scheme jumps from 4-> 6


![image](https://github.com/user-attachments/assets/3d1876f2-b72f-400d-85bf-16679c21077b)

![image](https://github.com/user-attachments/assets/8fca230b-c989-484d-9411-40418c55721d)


### Test plan
Markdown


cc @mergennachin @byjlw
J
Jack-Khuu committed
0ebb4ec677bf7c124a7b416a988540d903833d87
Parent: 52b4483
Committed by GitHub <noreply@github.com> on 4/7/2025, 10:40:25 PM