reactive armor spelling (tgstation#83724)

## About The Pull Request
All instances of reactive armor are now reactive armor, instead of some
being "armour"
## Why It's Good For The Game
Consistency
## Changelog
:cl: grungussuss
spellcheck: all instances of reactive armor are now spelt the same
/:cl:

_maps/RandomRuins/SpaceRuins/anomaly_research.dmm

@@ -121,7 +121,7 @@
  dir = 6
  },
 /obj/structure/table/reinforced,
-/obj/item/reactive_armour_shell,
+/obj/item/reactive_armor_shell,
 /obj/effect/decal/cleanable/dirt,
 /turf/open/floor/iron/dark,
 /area/misc/anomaly_research)

code/modules/clothing/suits/reactive_armour.dm

@@ -1,11 +1,11 @@
-/obj/item/reactive_armour_shell
- name = "reactive armour shell"
- desc = "An experimental suit of armour, awaiting installation of an anomaly core."
+/obj/item/reactive_armor_shell
+ name = "reactive armor shell"
+ desc = "An experimental suit of armor, awaiting installation of an anomaly core."
  icon_state = "reactiveoff"
  icon = 'icons/obj/clothing/suits/armor.dmi'
  w_class = WEIGHT_CLASS_BULKY
 
-/obj/item/reactive_armour_shell/attackby(obj/item/weapon, mob/user, params)
+/obj/item/reactive_armor_shell/attackby(obj/item/weapon, mob/user, params)
  ..()
  var/static/list/anomaly_armour_types = list(
  /obj/effect/anomaly/grav = /obj/item/clothing/suit/armor/reactive/repulse,

code/modules/research/designs/misc_designs.dm

@@ -720,7 +720,7 @@
 // Armour
 
 /datum/design/reactive_armour
- name = "Reactive Armour Shell"
+ name = "Reactive Armor Shell"
  desc = "An experimental suit of armour capable of utilizing an implanted anomaly core to protect the user."
  id = "reactive_armour"
  build_type = PROTOLATHE | AWAY_LATHE
@@ -731,7 +731,7 @@
  /datum/material/silver = SHEET_MATERIAL_AMOUNT*2.5,
  /datum/material/gold = SHEET_MATERIAL_AMOUNT * 2.5,
  )
- build_path = /obj/item/reactive_armour_shell
+ build_path = /obj/item/reactive_armor_shell
  category = list(
  RND_CATEGORY_EQUIPMENT + RND_SUBCATEGORY_EQUIPMENT_SCIENCE
  )