Add 301 redirect for 'Parental Leave and Return Tool Kit for Managers and Team Members' page

Why is this change being made?

Add 301 redirect for 'Parental Leave and Return Tool Kit for Managers and Team Members' page

Builds on this merge request: !47622 (diffs)

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