Previously the hyperlink for 'supports normal reads and writes' in post 3 was redirecting to a page not found, as I guess Stanford has remove that link. So I have added the correct link, which redirects to Stanford's Secure Systems Group, where they have the deails about CS140 course and relevant pintos docs.
Zola only checks the markdown source for link targets, so an error occurs if the target is in an template. This is the case for our `#comments` links, so we add a dummy target in a comment.
