Corrects 200+ instances of "it's" where it should've been "its" instead (#85169)

## About The Pull Request

it's - conjunction of "it" and "is"
its - possessive form of "it"

grammar is hard, and there were a lot of places where "it's" was used
where it shouldn't have been. i went and painstakingly searched the
entire repository for these instances, spending a few hours on it. i
completely ignored the changelog archive, and i may have missed some
outliers. most player-facing ones should be corrected, though
## Why It's Good For The Game
proper grammar is good

## Changelog
🆑
spellcheck: Numerous instances of "it's" have been properly replaced
with "its"
/🆑

code/modules/modular_computers/file_system/programs/atmosscan.dm

@@ -27,7 +27,7 @@
 	on_analyze(source=source, target=get_turf(computer))
 	return COMPONENT_CANCEL_ATTACK_CHAIN
 
-/// Keep this in sync with it's tool based counterpart [/obj/proc/analyzer_act] and [/atom/proc/tool_act]
+/// Keep this in sync with its tool based counterpart [/obj/proc/analyzer_act] and [/atom/proc/tool_act]
 /datum/computer_file/program/atmosscan/tap(atom/A, mob/living/user, params)
 	if(atmozphere_mode != ATMOZPHERE_SCAN_CLICK)
 		return FALSE