Update history.txt

Author: IllianiBird

MekHQ/docs/history.txt

@@ -532,6 +532,7 @@ MEKHQ VERSION HISTORY:
 + Fix #5932: Added check for injuries that are not permanent before going on leave
 + PR #5946: Implemented Linked Scenarios for Interceptions
 + Fix #5951: Fixed Cargo Capacity Calculation in For Cargo Items in Body
++ PR #6601: When restoring techs time, Large Vessel Crews should be considered techs.
 
 0.50.02 (2024-12-30 2130 UTC)
 + Fix #846, #5185: Fix BattleArmor customization/refit overweight check.