updated translations

resources/lang/sq-AL/invoices.php

@@ -12,11 +12,16 @@ return [
     'quantity'          => 'Sasia',
     'price'             => 'Çmimi',
     'sub_total'         => 'Nëntotali',
+    'discount'          => 'Discount',
     'tax_total'         => 'Tatimi Gjithsej',
     'total'             => 'Totali',
 
     'item_name'         => 'Emri i Artikullit | Emrat e Artikullit',
 
+    'show_discount'     => ':discount% Discount',
+    'add_discount'      => 'Add Discount',
+    'discount_desc'     => 'of subtotal',
+
     'payment_due'       => 'Pagesa e Duhur',
     'paid'              => 'I paguar',
     'histories'         => 'Historitë',