Add legal review to Board Meeting Timeline

Why is this change being made?

Legal now needs to review all Board Material before we ship it. This adds that step to the timeline.

Does this MR meet the acceptance criteria?

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