docs: example for blockquote cite

exampleSite/content/cont/markdown.en.md

@@ -19,7 +19,7 @@ Some of the key benefits are:
 John Gruber, the author of Markdown, puts it like this:
 
 > The overriding design goal for Markdown’s formatting syntax is to make it as readable as possible. The idea is that a Markdown-formatted document should be publishable as-is, as plain text, without looking like it’s been marked up with tags or formatting instructions. While Markdown’s syntax has been influenced by several existing text-to-HTML filters, the single biggest source of inspiration for Markdown’s syntax is the format of plain text email.
-> -- John Gruber
+> <cite>John Gruber</cite>
 
 Without further delay, let us go over the main elements of Markdown and what the resulting HTML looks like: