Update locales.json (#538)

Added a missing translation line

src/Ryujinx/Assets/locales.json

@@ -22660,7 +22660,7 @@
         "it_IT": "",
         "ja_JP": "",
         "ko_KR": "",
-        "no_NO": "",
+        "no_NO": "Sist oppdatert: {0}",
         "pl_PL": "",
         "pt_BR": "",
         "ru_RU": "",
@@ -22898,4 +22898,4 @@
       }
     }
   ]
-}
+}