Fixes for the north korean OOB

[Marcello]

Unit 236 Art Observer
Initial availability date could be extended back to 2/1948

Unit 300 Rifle Section
Weapon n. 6 PPSh-41 could be added in slot 4

Unit 360 reserve section
Weapon n. 237 M38/44 Carbine in slot 2 could be replaced with weapon n. 6 PPSh-41


To better reflect the widespread use of the PPSh-41 in the north Korean forces at the time of the korean war.

Source: History of the North Korean Army
Headquarters, Far East Command, Military Intelligence Section, General Staff