Recreate Strategy: mention about Mid deployment hook

[php-coder]

Documentation about Recreate Strategy doesn't mention about Mid deployment hook that was added in 1.1.2:

The Recreate strategy now supports mid hooks which run while all old pods have been scaled down and before any new pods are scaled up - use it to run migrations or config changes that can only happen while the application is completely shut down

[mburke5678]

@php-coder Information on mid hooks was added to 3.2
5ea53ac#diff-bb64229c6f759cb3173e8feed89d827b

Closing the issue unless you feel that this does not address your issue.