Update alert permissions text to reflect current default settings

Author: Shannon Anahata

docs/product/alerts/index.mdx

@@ -49,7 +49,7 @@ You can see a list of all your Alerts on the [Alerts](https://sentry.io/issues/a
 
 <Alert>
 
-Alerts are an Organization-level feature. By default, only owners, managers, and team admins can create, update, and delete Alerts.
+Alerts are an Organization-level feature. By default, all team members can create and edit Alerts. You can update this setting in [Organization Membership settings](https://sentry.io/settings/organization/).
 
 </Alert>