Missing cpu_entitlement in process stats description

[krismarc]

Issue

Not sure if it just needs to be added here:
https://github.com/cloudfoundry/cloud_controller_ng/blob/main/docs/v3/source/includes/resources/processes/_stats_object.md.erb

Similar action done here:
#4403
#4405

Context

No response

Steps to Reproduce

No response

Expected Result

No response

Current Result

No response

Possible Fix

No response

[kathap]

Proposed solution: #4961

[philippthun]

Fixed with #4961