Git flow wiki page edits

[mhulse]

Regarding the notes on this page:

https://github.com/mhulse/mhulse.github.io/wiki/Git-flow-for-pros

• Make any reference to shorthand the longhand equivalent
• Remove auto complete or note that not everyone has that
• Change any specific feature branch names to something generic (e.g. 'feature-branch') just to make it really clear.