Removed team hardcoding

Why is this change being made?

Before the database team was split out in team.yml I hardcoded this handbook page to accurately represent the database team. Now that we're split out in team.yml we can un-hardcode.

Updated Interim reference to Acting per new guidelines

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what