Describe the behavior with limit_*_batches=1|1.0

[carmocca]

What does this PR do?

The behavior for limit_*_batches is wildly different when the user passes 1 vs 1.0. This can be a footgun.
This PR aims to increase transparency by showing a message clarifying the behavior.

In reaction to https://twitter.com/jxmnop/status/1494007900494303243 cc @Borda @jxmorris12

Proposed by @williamFalcon

Does your PR introduce any breaking changes? If yes, please list them.

None

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[jxmorris12]

thank you!!!!!

[rohitgr7]

nit: