fix(iam): permissions

Author: ldecarvalho-doc

pages/iam/how-to/manage-members.mdx

@@ -108,7 +108,7 @@ The updated information appears in the Member Overview.
 3. Click the **Credentials** tab.
 4. Click **Edit** next to the information you want to update in the **Sign in credentials** section. For each credential a different pop-up appears.
     <Message type="note">
-    You need IAM Manager permissions to change a Member's username.
+    You need IAM Manager permissions to change your own username.
     </Message>
 5. Enter the new information in the box.
     <Message type="important">