DOC: Close backticks in docstring.
DOC: Close backticks in docstring.

bartosh/zipline,alphaBenj/zipline,florentchandelier/zipline,alphaBenj/zipline,Scapogo/zipline,enigmampc/catalyst,florentchandelier/zipline,bartosh/zipline,humdings/zipline,quantopian/zipline,humdings/zipline,quantopian/zipline,enigmampc/catalyst,Scapogo/zipline