[Elastic Defend] Align Integration docs with Elastic Defend Policy

I noticed that in the Integration Documentation for Elastic Defend, there appears to be a discrepancy between the events that can be enabled by the policy versus what is provided in the integration.

For example, I would expect to see where does `Driver and DLL Load` events exist in the integration field docs. Another is the `DNS` events, even though I can assume they live in `Network`

https://www.elastic.co/guide/en/security/current/configure-endpoint-integration-policy.html#event-collection

https://docs.elastic.co/en/integrations/endpoint#logs

## Current:
Defend Policy Event Collection:
**DLL and Driver Load** Not in integration docs
**DNS** Not in integration docs
File
Network
Process
Registry
Security

Defend Integration Field Docs:
Alerts* Assumed from detect/prevent capabilities
File
**Library** Maybe DLL and Driver Load but unclear
Network
Process
Registry
Security

## Expectation:
Defend Integration Field Docs:
Alerts
DLL and Driver Load*
DNS*
File
Library*** Remove? Or rename to DLL and Driver Load / sync with terminology from Elastic Defend?
Network
Process
Registry
Security