Add clarification to version control

[kaitj]

This PR adds a clarification to the version control - that is some traceable history (e.g. commit hash, version tag, etc.) I tried to keep this in a similar style to other clarification points.

[shnizzedy]

What's the anticipated confusion this clarification is meant to clear up?

Maybe I'm being dense, but I think "version control" is a pretty widely understood term in the context of software and "traceable history" is a little more vague?

Instead of

i.e., traceable history of changes; e.g. commit hash, version tags

could something as simple as

e.g., git or Apache Subversion

suffice?

[kaitj]

I can't recall where the potential confusion stemmed from. I think your suggestion would probably suffice, or could potentially just leave as is unless it gets brought up during actual use now that I am looking at this again.