Documentation: Atomic attribute also used when A_EXT = ZALRSC

Placeholder Arjan Bink
2024-12-12T08:37:55Z

Atomic attribute is also used when A_EXT = ZALRSC, so following is not accurate:

![image](https://github.com/user-attachments/assets/11490f7e-acba-4841-99a6-3c45fc92b09e)