Update StORM Page - format, roles & responsibilities, ARA procedure

Why is this change being made?

This is a small change to the StORM Program & Procedures page. The changes include:

• Update roles and responsibilities table to align formatting (missing text emphasis on one role)
• Update role title on roles and responsibilities table for Director of Security Compliance and Risk to Director of Security Assurance, as consistent with titling mentioned in the security assurance job families
• Adjustment to the ARA procedures summary to call out that ARA interviews will occur with Managers or above as a way to ensure that we are including Managers, Staff/Principles, Directors, etc. This is per feedback from the FY22 ARA

Author Checklist

• Provided a concise title for the 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.
• Assign reviewers for this change to the correct DRI(s)
  • 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 in 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.
• 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.

---