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/cargo/universal_scanner.dm

@@ -165,7 +165,7 @@
 			context[SCREENTIP_CONTEXT_LMB] = "Scan for export value"
 	return CONTEXTUAL_SCREENTIP_SET
 /**
- * Scans an object, target, and provides it's export value based on selling to the cargo shuttle, to mob/user.
+ * Scans an object, target, and provides its export value based on selling to the cargo shuttle, to mob/user.
  */
 /obj/item/universal_scanner/proc/export_scan(obj/target, mob/user)
 	var/datum/export_report/report = export_item_and_contents(target, dry_run = TRUE)
@@ -240,7 +240,7 @@
 				to_chat(user, span_warning("Bank account not detected. Handling tip not registered."))
 
 /**
- * Scans an object, target, and sets it's custom_price variable to new_custom_price, presenting it to the user.
+ * Scans an object, target, and sets its custom_price variable to new_custom_price, presenting it to the user.
  */
 /obj/item/universal_scanner/proc/price_tag(obj/target, mob/user)
 	if(isitem(target))