Update KPI with investment thesis link

Why is this change being made?

This MR creates a new link on the KPI page to the investment thesis used by Product when determining the impact on IACV of a feature

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