Missing endpoints for Private Aggregation on collecting & batching documentation

[chasinandrew]

On the collecting & batching documentation, it states there are four types of reports and all these reports are sent to the well-known endpoints for attribution-reporting. Private Aggregation is mentioned at the top of the page, while they are the same type of reports, these reports are not sent to /.well-known/attribution-reporting/*. They are sent to the following endpoints called out in the Private Aggregation explainer, it would be helpful to include these to avoid confusion:

• Shared Storage: /.well-known/private-aggregation/report-shared-storage
• Protected Audience: /.well-known/private-aggregation/report-protected-audience