Use proper path separator for multi buffer headers (#23635)

Before: 


![bad](https://github.com/user-attachments/assets/ab20836a-b3bb-4b33-8ce4-eecc79d5f02f)


After:


![good](https://github.com/user-attachments/assets/40c328d1-2ef1-4a9b-9de9-9be9bba26756)


Release Notes:

- N/A

Kirill Bulatov committed 1y ago

392b95b179160a1b53ba74c273edcc05480a9a58

Parent: 5f417ed

Committed by GitHub <noreply@github.com> on 1/25/2025, 8:35:22 AM