[MM-36327] - Make a translation string clearer (#17922)

* [MM-36327] - Make a translation string clearer

* remove extra dot

i18n/en.json

@@ -4148,7 +4148,7 @@
   },
   {
     "id": "api.user.update_active.cloud_at_limit_check_error",
-    "translation": "Unable to make cloud check for at or over the limit."
+    "translation": "Unable to check number of users in your Mattermost cloud instance."
   },
   {
     "id": "api.user.update_active.cloud_at_or_over_limit_check_overcapacity",

i18n/en_AU.json

@@ -9212,7 +9212,7 @@
   },
   {
     "id": "api.user.update_active.cloud_at_limit_check_error",
-    "translation": "Unable to make cloud check for at or over the limit."
+    "translation": "Unable to check number of users in your Mattermost cloud instance."
   },
   {
     "id": "app.system.system_bot.bot_displayname",