[Fix] weird numbering

### File or page

https://btcnyc.github.io/classes/topics/bitcoin-hardware-wallet/00-beginners-hardware-wallet/lesson/

### What needs fixing?

<img width="835" height="714" alt="Image" src="https://github.com/user-attachments/assets/cbb93329-c2e6-4b86-98fb-43aade783015" />

### Suggested correction

fix the new lines so it doesn't count 1 twice