wpmu_update_blog_options
Action Hook: Fires after the site options are updated.
Source: wp-admin/network/site-settings.php:60
Action Hook: Fires after the site options are updated.
Source: wp-admin/network/site-settings.php:60
Action Hook: Fires at the end of the Edit Site form, before the submit button.
Source: wp-admin/network/site-settings.php:174