Removes unecessary patch 3.38.1 notes
Created by: benjaminwgordon
We don't have notes for minor version upgrades anywhere else in this doc, but there currently are notes showing 3.38.0 -> 3.38.1. This introduces lack of clarity for customers on whether or not moving from 3.38.0 -> 3.38.1 is necessary before they proceed to upgrade to 3.39
Test plan
Docs update, no test necessary