Escape {% example %}

See https://stackoverflow.com/questions/3426182/how-to-escape-liquid-template-tags

pages/about.md

@@ -114,7 +114,7 @@ console.log(greet("world"));
 
 url: <http://www.example.com>
 
-See the [Jekyll documentation](https://jekyllrb.com/docs/liquid/tags/#linking-to-posts) to create internal links. Syntax is e.g. `[link](/about/)` or `[link]({% post_url 2010-07-21-name-of-post %})`.
+See the [Jekyll documentation](https://jekyllrb.com/docs/liquid/tags/#linking-to-posts) to create internal links. Syntax is e.g. `[link](/about/)` or `[link]({{"{% post_url 2010-07-21-name-of-post"}}%})`.
 
 ## Tables