Updated the Revision definition

Updated the Revision definition

Reassigned to @ernstvn

Should we add a more development centric section for this concept @dan.gitlab ?

Reassigned to @dan.gitlab

@dan.gitlab not sure what happened here or if it is still needed, which is why I'm sending it to you.

Hi @ernstvn , this was one of my suggestions for the Revision definition. I am not sure if it needs to be changed or modified in any way... I am not certain on who has the last word on it...

@ernstvn please let me know if I should close the merge request or not