Fix 0ffd638 with smarter way to join with linebreaks.
Fix 0ffd638 with smarter way to join with linebreaks.

petehayes102/mdBook,petehayes102/mdBook,superstring/mdBook,azerupi/mdBook,superstring/mdBook,superstring/mdBook,petehayes102/mdBook,azerupi/mdBook,azerupi/mdBook,superstring/mdBook,petehayes102/mdBook,azerupi/mdBook