Fix for broken about links.

I'm not quite sure how this works, but I'm going to explain what I did for the sake of simplicity:

1.  Find affected links (in the project directory)

        grep -ir "/about/" ./*
2.  Replace all occurrences

        perl -e "s|/about/|/About/|g;" -pi $(find ./ -type f)

3.  There were links pointing to /tag/about, I've left them with lower case

        perl -e "s|tags/About/|tags/about/|g;" -pi $(find ./ -type f)


I haven't tested i, but I hope this approach works.