Markdown syntax for a link is pretty simple:
[Example](http://example.com/)
produces:
But what if the link itself contains a closing bracket?
[Syntax](http://en.wikipedia.org/wiki/Syntax_(programming_languages))
produces:
which is obviously broken.
Edit
Putting the url in quotes does not work
You can try to escape the character:
[Syntax](http://en.wikipedia.org/wiki/Syntax_\(programming_languages\))
You can also encode the characters
[Syntax](http://en.wikipedia.org/wiki/Syntax_%28programming_languages%29)