renderBlock docblock fix
renderBlock docblock fix

kkiernan/commonmark,fesor/commonmark,hason/commonmark,thephpleague/commonmark,postalservice14/commonmark,colinodell/commonmark,postalservice14/commonmark,fesor/commonmark,garethellis36/commonmark,garethellis36/commonmark,kkiernan/commonmark,stof/commonmark,hason/commonmark,bcremer/commonmark,thephpleague/commonmark,cebe/markdown-1