Update pt.json

Author: Pedro Gonçalves

resources/lang/pt.json

@@ -221,7 +221,7 @@
     "Libyan Arab Jamahiriya": "Líbia",
     "Liechtenstein": "Lichtenstein",
     "Lithuania": "Lituânia",
-    "Luxembourg": "Luxemburgo,
+    "Luxembourg": "Luxemburgo",
     "Macao": "Macau",
     "Macedonia": "Macedónia",
     "Madagascar": "Madagáscar",