build(docs): separate top-level elements by newline again

I.e. make the HTML output approximately the same as years ago.
Addition of the '\n' character copied from the HtmlRenderer.

docs/__init__.py

@@ -31,7 +31,8 @@ def render_document(self, token, name="README.md"):
                 if v == filename:
                     self.footnotes[k] = new_link
         subtitle = ' | {}'.format('version ' + __version__ if name == 'README.md' else name.split('.')[0].lower())
-        return pattern.format(METADATA.format(subtitle), self.render_inner(token))
+        body = '\n'.join([self.render(child) for child in token.children])
+        return pattern.format(METADATA.format(subtitle), body)
 
     def _replace_link(self, token):
         token.target = getattr(self, 'files', {}).get(token.target, token.target)