Added AMER Sales Welcome Swag Kit information

Why is this change being made?

Adding details for the AMER Sales Welcome Swag Kits so both field marketing managers and sales teams are aware of how the kits will be processed.

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

@lblanchard - Kept the details short and sweet, but let me know if there is more information you would like included.
@tparuchuri - Once this is approved and merged, please link under in the sales onboarding page as previously discussed. Thanks!