Use unit args for Locale functions

Author: codegod100

platform/Locale.roc

@@ -2,10 +2,10 @@ Locale := [].{
     ## Returns the most preferred locale for the system or application.
     ##
     ## The returned [Str] is a BCP 47 language tag, like `en-US` or `fr-CA`.
-    get! : {} => Str
+    get! : () => Str
 
     ## Returns the preferred locales for the system or application.
     ##
     ## The returned [Str] are BCP 47 language tags, like `en-US` or `fr-CA`.
-    all! : {} => List(Str)
+    all! : () => List(Str)
 }