updating nits in tutorial docs

[Gary Aitken <ga...@dreamchaser.org>]

Can someone point me / tell me what the process is for submitting or
notifying someone about fixing minor nits in the tutorial docs?  While it 
looks like code development is rather quiet, there are substantive bugs in 
the documentation code snippets which makes digesting them more difficult, 
and it seems a shame not to correct them.

Thanks,

Gary