fix typo for gks sendPhoneInvoice function

when creating a `phone invoice` the function was checking if `gks-phone` was started, but I believe the script folder name is default `gksphone`

shared/phones.lua

@@ -171,7 +171,7 @@ function sendPhoneInvoice(data)
             end
         },
         {
-            name = "gks-phone",
+            name = "gksphone",
             send = function(mailData)
                 -- Defensive check for required fields
                 local required = { "billedCitizenid", "amount", "job", "name", "billerCitizenid", "label" }
@@ -197,7 +197,6 @@ function sendPhoneInvoice(data)
         }
     }
 
-
     -- Check each phone system in order and use the first active one.
     for _, phone in ipairs(phoneSystems) do
         if isStarted(phone.name) then