Manual: missing accent indicator on exhaust fan grill (p252)

![Screenshot from 2024-08-04 13-53-44](https://github.com/user-attachments/assets/dd909241-5815-4433-beec-38f4724bed58)

The actual part is `STLs/Exhaust_Filter/[a]_exhaust_fan_grill.stl` 

![image](https://github.com/user-attachments/assets/9157d541-4311-480e-a6bf-14540d3d3028)
