Joomla! Documentation™

Any links you have on your website which lead to an external resource should clearly inform your visitors what they are linking to without being spammy - for example Joomla! Documentation Project would be a clear indication that the link is directing people to the homepage of the Joomla! Documentation Project. If the link were to be written as here it is not so clear what page you might be visiting - and as you haven't used any keywords from the landing page, their site will not be getting the best benefit from your link.