cSpell: cleanup sexExp/secForce

cspell.json

src/Mods/SecExp/buildings/SecExpBuildingsBC.js

src/Mods/SecExp/events/conflictHandler.js

src/Mods/SecExp/js/Unit.js

src/Mods/SecExp/js/secExpObject.js

src/Mods/SecExp/js/securityReport.js

src/Mods/SpecialForce/AfterActionReport.js

src/Mods/SpecialForce/FirebaseTour.js

src/Mods/SpecialForce/SpecialForceBC.js

src/Mods/SpecialForce/SpecialForceFS.js

src/Mods/SpecialForce/upgrades/SpecialForceUpgradeText.js