Update README.md

Co-authored-by: Copilot <[email protected]>

Author: ruvenzx

README.md

@@ -561,7 +561,7 @@ descope_client.mgmt.tenant.update(
 descope_client.mgmt.tenant.load_settings(id="my-custom-id")
 
 # updating the settings
-descope_client.mgmt.tenant.update_settings(id="my-custom-id", self_provisioning_domain=["domain.com"], session_settings_enabled=True, refresh_token_expiration=1, refresh_token_expiration_unit="hours")
+descope_client.mgmt.tenant.update_settings(id="my-custom-id", self_provisioning_domains=["domain.com"], session_settings_enabled=True, refresh_token_expiration=1, refresh_token_expiration_unit="hours")
 
 
 # Tenant deletion cannot be undone. Use carefully.