Added clarifying visuals and text to illustrate how to access Zendesk STAR form

Why is this change being made?

There was no clear direction for where to look within Zendesk in order to find the STAR form. Visuals and clarifying text were added to further illustrate how to access the STAR form natively within a Zendesk ticket.

Author Checklist

• Provided a concise title for this Merge Request (MR)
• Added a description to this MR explaining the reasons for the proposed change, per say why, not just what
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  • The when to get approval handbook section explains the workflow in more detail
• If the changes affect team members, or warrant an announcement in another way, please consider posting an update in #whats-happening-at-gitlab linking to this MR
  • If this is a change that directly impacts the majority of global team members, it should be a candidate for #company-fyi. Please work with internal communications and check the handbook for examples.

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