Update text in the doc

Text corrections.
Merge pull request #2232 from Azure/FromPrivateRepo

From private repo
Set manager on new python articles
Merge pull request #2233 from huguesv/manager

Set manager on new python articles
Add manager to a python article I missed in previous commit
Merge pull request #2234 from huguesv/manager2

Add manager to a python article I missed in previous commit
Fixed 404 in Batch technical overview
Updated freshness date.
Updated freshness date.
Merge pull request #2231 from oranms/patch-1

Update text in the doc
Updated freshness date.
Refresh for how to install python topic
Updated freshness date.
Updated freshness date.
Updated freshness date.
Updated freshness date.
Merge pull request #5781 from Erikre/patch-2

Updated freshness date.
Updated freshness date.
Updated freshness date.
Merge pull request #5782 from Erikre/patch-3

Updated freshness date.