More SecExp.buildings errors

the variables are

• $SecExp.buildings.riotCenter.fort.reactor
• $SecExp.buildings.riotCenter.fort.waterway
• $SecExp.buildings.riotCenter.fort.assistant

assigned to @Blank_Alt

mentioned in merge request !8015 (merged)

closed with merge request !8015 (merged)

mentioned in commit 68a5aed0