Simplify Paragraph::finalize()
Simplify Paragraph::finalize()

kkiernan/commonmark,hason/commonmark,hason/commonmark,postalservice14/commonmark,kkiernan/commonmark,thephpleague/commonmark,fesor/commonmark,thephpleague/commonmark,stof/commonmark,fesor/commonmark,postalservice14/commonmark,colinodell/commonmark,garethellis36/commonmark,garethellis36/commonmark,bcremer/commonmark