This PR updates the ML and Transform plugin `readme.md` files as well as
the API integration junit report names for ML, Transform and AIOps after
recent test config splits.
## Summary
Currently we run all x-pack api integration tests as a single piece
(config) and it takes on average **33+ minutes**
If a single test fails, buildkite retries the config and you have to
wait another 30+ minutes to see if test passed (flaky test sign) or
failed (PR broke test)
<img width="1581" alt="image"
src="https://user-images.githubusercontent.com/10977896/218059268-1d4b5b40-797d-4748-a9f6-9101cfd9803a.png">
Splitting config into many small ones will not only speedup overall CI
run (configs will be assigned to different workers based on its
historical run time) but also speedup retry by running only a sub set of
tests related to the particular config file.
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Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>
