Update versioning_policy.md
Update versioning_policy.md

Mention optional manual update steps in patch level versions.
Modularfield/pageflow,tf/pageflow,codevise/pageflow,Modularfield/pageflow,tf/pageflow,Modularfield/pageflow,Modularfield/pageflow,tf/pageflow,codevise/pageflow,tf/pageflow,codevise/pageflow,codevise/pageflow