[Fleet]: Outdated screenshot for agent policy details tab.

[amolnater-qasource]

Description:
Outdated screenshot for agent policy details tab.

Links:
https://www.elastic.co/docs/reference/fleet/example-standalone-monitor-nginx#nginx-guide-add-integration-ess

Actual Screenshot:

Expected Screenshot:

Build details:
VERSION: 9.1.0
BUILD: 88250
COMMIT: 9f30374092edd41719399f7ef81cb7ae78d8a3ab

[amolnater-qasource]

@muskangulati-qasource Please review.

[muskangulati-qasource]

Secondary review is Done for this ticket!

[amolnater-qasource]

FYI @vishaangelova