Update Package vision and epics

Why is this change being made?

This MR updates the goals in the Package strategy section as well as updates one of the epics in the group themes.

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