what's new in the docs update for June 2021 (#3650)

* what's new in the docs update for June 2021

* acrolinx

* update indentation

* reorder

* cleanup pass

* code escapes

* add VS qualifier

Co-authored-by: TylerMSFT <[email protected]>

Author: TylerMSFT

.whatsnew.json

@@ -7,7 +7,7 @@
     "relativeLinkPrefix": "../"
   },
   "inclusionCriteria": {
-    "minAdditionsToFile": 10,
+    "minAdditionsToFile": 3,
     "pullRequestTitlesToIgnore": [
       "^Confirm merge from FromPublicMasterBranch",
       "^Repo sync for protected CLA branch"