SDR_handbookupdate

Why is this change being made?

The super leaf coin is no longer being used and therefore needs to be removed from this SDR onboarding description. I am removing the sentence that references the coin. For reference, this is where I found that information: !35864 (merged)

Does this MR meet the acceptance criteria?

Yes

Conformity

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