Minor: clarify performance in docs for ScalarUDF
, ScalarUDAF
and ScalarUDWF
#9384
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Which issue does this PR close?
re #8578
Rationale for this change
@SteveLauC asked about why the "simple" APIs were less performant https://github.com/apache/arrow-datafusion/pull/8578/files#r1505483541
In researching the answer I concluded that they are not really less performant, and thus the documentation shouldn't imply they are.
What changes are included in this PR?
Update the docs to explain the difference better
Are these changes tested?
CI docs test
Are there any user-facing changes?