Fix renderBlock() in paste-html example (#2934)
Fix renderBlock() in paste-html example (#2934)

* Fix renderBlock() in paste-html example

It appears that render block is missing a case for rendering `paragraph`. Without this paragraphs are being rendered as `<div>`s.

* Fixed lint error

isubastiCadmus/slate,ianstormtaylor/slate,ianstormtaylor/slate