Fix typos.

i18n/en.i18n.json

@@ -1055,6 +1055,6 @@
   "Wave": "Wave Wait Spinner",
   "maximize-card": "Maximize Card",
   "minimize-card": "Minimize Card",
-  "delete-org-warning-message": "Can not delete this organization, there is at least one user belongs to is",
-  "delete-team-warning-message": "Can not delete this team, there is at least one user belongs to is"
+  "delete-org-warning-message": "Can not delete this organization, there is at least one user that belongs to it",
+  "delete-team-warning-message": "Can not delete this team, there is at least one user that belongs to it"
 }