[Low Priority] Clarify that 1.1 of Dues Policy applies to Full ROs only

[EdHollingdale]

Clarify in the Dues Policy that 1.1 (ability for ROs to nominate themselves as being responsible for Dues payments in their region) applies to Full ROs only (not associate ROs).

Low priority as this is explicit in the Motions, and the Motions supersede Policies.