feat(iam): note logs

Author: ldecarvalho-doc

identity-and-access-management/iam/how-to/invite-user-to-orga.mdx

@@ -40,4 +40,7 @@ You can invite people to be IAM users of an Organization in which you are not th
     The user receives an email inviting them to accept your invitation. If they do not already have a Scaleway account, they will be prompted to [create one](/console/account/how-to/create-an-account/) first.
 6. The user will appear in the list of your Organization's users once they have accepted the invitation.
 
-
+<Message type="important">
+  Invitations have a validity period of 7 days.
+  Once an invitation expires, or if it is rejected, an [IAM log](/identity-and-access-management/iam/how-to/view-logs) is created indicating the user was "deleted".
+</Message>