Minor Gun and Moth Fixes (#2167)

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## About The Pull Request

Brings the Toy C-20r smg in line with all of the foam weapons by giving
it the same firing sound as the rest. Removes the ability for it to be
suppressed for consistency as well. Changes "colorfull" in the rainbow
moth's description to the proper spelling of colorful.

## Why It's Good For The Game

Load up the Halftrack. Test out my foam guns and not have my eardrums
hurt from an overly loud "Toy" C-20r. Hug my favorite moth plushie buddy
and not cry at the extra l in their description. Life's good.

## Changelog

:cl:
tweak: Removed the ability for the Toy C-20r to accept a suppressor.
fix: Gave the Toy C-20r the proper firing sound.
spellcheck: Fixed the description of the rainbow moth.
/:cl:

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---------

Signed-off-by: Geoengi <139566513+Geoengi@users.noreply.github.com>

code/game/objects/items/plushes.dm

@@ -698,7 +698,7 @@
 
 /obj/item/toy/plush/moth/rainbow
 	name = "rainbow moth plushie"
-	desc = "An adorable mothperson plushy. It's a colorfull bug!"
+	desc = "An adorable mothperson plushy. It's a colorful bug!"
 	icon_state = "moffplush_rainbow"
 
 /obj/item/toy/plush/moth/suicide_act(mob/living/user)

code/modules/projectiles/guns/ballistic/toy.dm

@@ -85,9 +85,10 @@
 /obj/item/gun/ballistic/automatic/smg/c20r/toy //This is the syndicate variant with syndicate firing pin and riot darts.
 	name = "donksoft SMG"
 	desc = "A bullpup two-round burst toy SMG, designated 'C-20r'. Ages 8 and up."
-	can_suppress = TRUE
+	can_suppress = FALSE
 	item_flags = NONE
 	mag_type = /obj/item/ammo_box/magazine/toy/smgm45/riot
+	fire_sound = 'sound/items/syringeproj.ogg'
 	casing_ejector = FALSE
 	clumsy_check = FALSE