Update en.json (#17356)

Automatic Merge

i18n/en.json

@@ -1436,7 +1436,7 @@
   },
   {
     "id": "api.command_share.service_disabled",
-    "translation": "Shared Channels Service is disabled.."
+    "translation": "Shared Channels Service is disabled."
   },
   {
     "id": "api.command_share.share_channel.error",