Translate extractedMessages.json in en

100% translated source file: 'extractedMessages.json'
on 'en'.

src/translation/languages/en.json

@@ -2936,7 +2936,7 @@
   },
   "zdVSFQ": {
     "developer_comment": "Security keys list - paragraph",
-    "string": "This is a list of names of maker and models of external security keys that kan be used for eduID. The list is updated once a month"
+    "string": "This is a list of names of maker and models of external security keys that kan be used for eduID. The list is updated once a month."
   },
   "zeCbht": {
     "developer_comment": "start main title",