A D.C. councilwoman is planning a major amendment to legislation that D.C. Council will consider Tuesday that could create some of the most generous paid leave rules in the country. D.C. Councilwoman LaRuby May, D-Ward 8, circulated a description of the amendment Monday afternoon, calling for a program that would instead offer refundable tax credits and extend employer sick leave. It comes just a week after Council Chairman Phil Mendelson released his own revised version of the Universal Paid Leave…