* Remove a tip about ignore_above that only makes sense with multiple types.
* Remove a line from the percolator documentation that refers to multiple types.
Currently docs don't explain how `ignore_above` behaves with arrays of
strings.
Clarify how `ignore_above` applies for arrays of strings and
also note that all string(s) will still be visible in the
`_source` field.
Relates #33057
Allowing `_doc` as a type will enable users to make the transition to 7.0
smoother since the index APIs will be `PUT index/_doc/id` and `POST index/_doc`.
This also moves most of the documentation to `_doc` as a type name.
Closes#27750Closes#27751
Julie Tibshirani
Dimitrios Liappis
Adrien Grand
David Turner
Clinton Gormley