Indicate which items in the prioritization table are forced

Why is this change being made?

We've made a change to the prioritization language to indicate they are guidelines. However, there are a few items in the table that have actual service level agreements/objectives PMs need to meet. This is a simple iteration to outline the two (Security and Availability) that are "forced."

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
• Assign this change to the correct DRI
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  • 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

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