* Fix introduction statement.
* Change the owner for ES.
Update the file referenced for the permissions check.
Update the file reference.
* Replaced `.jpg` of previous file with `.png`.
Replaced redis search image.
Updated redis image to newer image type.
* Fix grammar mistake.
Change `HOST_GID` to 0.
Add new section to start Upgrade details.
* Add `Upgrade` section.
* Added note about Links.
* Add missing note quotes.
* Replace the previous, manual method with the "Reset" action.
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