Update source/handbook/finance/financial-planning-and-analysis/index.html.md

Why is this change being made?

I am updating the Campaign tag verification process weekly procedures. We have a new Periscope dashboard and weekly cadence that will make the process more efficient.

Does this MR meet the acceptance criteria?

Conformity

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