Adds some trailing commas to lists, fixes typo (#79422)

## About The Pull Request

What it says on the tin. Another one of these PR's. Is there a reason
why we don't use the linters to enforce trailing commas?

## Why It's Good For The Game

Cleaner diffs

## Changelog

🆑
code: added some trailing commas in lists that were missing them, fixed
a typo in comments
/🆑

code/modules/shuttle/supply.dm

@@ -32,7 +32,7 @@ GLOBAL_LIST_INIT(blacklisted_cargo_types, typecacheof(list(
 		/obj/machinery/camera,
 		/obj/item/gps,
 		/obj/structure/checkoutmachine,
-		/obj/machinery/fax
+		/obj/machinery/fax,
 	)))
 
 /// How many goody orders we can fit in a lockbox before we upgrade to a crate
@@ -185,7 +185,7 @@ GLOBAL_LIST_INIT(blacklisted_cargo_types, typecacheof(list(
 				if(!paying_for_this.adjust_money(-price, "Cargo: [spawning_order.pack.name]"))
 					if(spawning_order.paying_account)
 						paying_for_this.bank_card_talk("Cargo order #[spawning_order.id] rejected due to lack of funds. Credits required: [price]")
-					if(!spawning_order.can_be_cancelled) //only if it absolutly cannot be canceled by the player do we cancel it for them
+					if(!spawning_order.can_be_cancelled) //only if it absolutely cannot be canceled by the player do we cancel it for them
 						rejected_orders += spawning_order
 					continue