Namesquatting policy page: Point directly to priority prospects page

Why is this change being made?

Currently, the Namesquatting Policy page has a link to "sales approved prospects". This link is https://about.gitlab.com/handbook/support/internal-support/#trials-and-prospect-support, but this section is just a single sentence: "For information relating to priority prospects, please see Priority Prospects."

This MR removes that interim step, and links directly from the Namesquatting Policy page to the Priority Prospects page. This increases efficiency and makes it easier to find the necessary information.

This MR also makes it more clear that the 3 criteria for Priority Prospects are with an AND condition, not an OR condition.

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
  • Copy/paste the Slack conversation to document it for later, or upload screenshots. Verify that no confidential data is added, and the content is SAFE
• Assign reviewers for this MR to the correct Directly Responsible Individual/s (DRI)
  • If the DRI for the page/s being updated isn’t immediately clear, then assign it to one of the people listed in the Maintained by section on the page being edited
  • If your manager does not have merge rights, please ask someone to merge it AFTER it has been approved by your manager in #mr-buddies
  • 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.

---