[MINOR][ML][DOC] Improved Naive Bayes user guide explanation
authorJoseph K. Bradley <joseph@databricks.com>
Wed, 9 May 2018 17:34:57 +0000 (10:34 -0700)
committerJoseph K. Bradley <joseph@databricks.com>
Wed, 9 May 2018 17:34:57 +0000 (10:34 -0700)
commit94155d0395324a012db2fc8a57edb3cd90b61e96
tree09aa68101d2621847aea45a0f31311fc9a476cb1
parent6ea582e36ab0a2e4e01340f6fc8cfb8d493d567d
[MINOR][ML][DOC] Improved Naive Bayes user guide explanation

## What changes were proposed in this pull request?

This copies the material from the spark.mllib user guide page for Naive Bayes to the spark.ml user guide page.  I also improved the wording and organization slightly.

## How was this patch tested?

Built docs locally.

Author: Joseph K. Bradley <joseph@databricks.com>

Closes #21272 from jkbradley/nb-doc-update.
docs/ml-classification-regression.md