Update history.txt

Author: pavelbraginskiy

megameklab/docs/history.txt

@@ -14,6 +14,8 @@ MEGAMEKLAB VERSION HISTORY:
 + PR #1802: Performance improvements and Dirty indicator for unsaved work
 + PR #1816: Undo/Redo
 + PR #1827: Print preview in print queue dialog + performance improvements
++ Fix #1820: Custom armor kit in RS
++ Fix #1823: AirMek MP display in RS
 
 0.50.04 (2025-03-22 1600 UTC)
 + Fix #1707: Fix transport tab weight inflation on infantry bays