Update role from TAM to CSM is Service Ping Doc

What does this MR do and why?

Change role from TAM's to CSM

Screenshots or screen recordings

Not required

How to set up and validate locally

Basic Documentation change on GitLab Role name

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.