I fixed the spelling error "realtime" to "real-time" in the nutshell.html file.
This was describing a user of FreeBSD, Sandvine. On Sandvine's website, the word is spelled "real-time",
which can be seen in this link.
It is important to maintain good documentation for clarity and sustainability. If a project is poorly documented, users or new
developers may become discouraged if trying to get involved with the project, and if it is harder for new people to learn how to
improve a project, it is less likely that they will actually contribute.