Fixes another singular typo within the code (#3188)

## About The Pull Request

Fixes another typo within the code

## Why It's Good For The Game

You have evaded my gaze for too long, Unqiue. You must perish for the
sake of grammatical correctness.
## Changelog

:cl: Cloudbreak
code: Fixes a singular typo within the code.
/:cl:

code/modules/projectiles/guns/energy.dm

@@ -331,7 +331,7 @@
 	. = ..()
 	var/obj/item/ammo_casing/energy/shot = ammo_type[select]
 	if(ammo_type.len > 1)
-		. += "You can switch firemodes by pressing the <b>unqiue action</b> key. By default, this is <b>space</b>"
+		. += "You can switch firemodes by pressing the <b>unique action</b> key. By default, this is <b>space</b>"
 	if(cell)
 		. += "\The [name]'s cell has [cell.percent()]% charge remaining."
 		. += "\The [name] has [round(cell.charge/shot.e_cost)] shots remaining on <b>[shot.select_name]</b> mode."