added release notes
Update media-services-release-notes.md
Azure Search page title, url-filename change for Configure Search, changing to Get started with Azure Search
Update media-services-release-notes.md

minor typos and heading changes
Updated Provision SQL topic with latest vm size info
updates for powershell
updates for powershell
azure search management API
Merge pull request #5243 from HeidiSteen/heidistmgmtapi

azure search management API
Merge pull request #5244 from Azure/FromPublicRepo

From public repo
Merge pull request #5245 from Azure/master

master
placeholder tutorials for mobile dev centers
Updating authors & metadata for iOS topics
placeholder tutorials for mobile dev centers
Updating authors & metadata for iOS topics
Updating authors & metadata for iOS topics
placeholder tutorials for mobile dev centers
ML additional articles + edit to old articles
ML Retail demand doc update
Merge pull request #5255 from jaymathe/dp-jm

ML additional articles + edit to old articles