[DOCS] should use setPostFilter instead of setFilter
fixed markup and typo
[DOCS] add DynamoDB river plugin
add elasticsearch-osem to integrations page
[DOCS] fixed count and validate query docs, they now require a top-level query object, same as other apis

Relates to #4074
[DOCS] fixed count and validate query docs, they now require a top-level query object, same as other apis

Relates to #4074
Closes #5111
[DOCS] fixed count docs, it now requires a top-level query object, same as other apis

Relates to #4074
Fix typo in similarity docs

DRF similarity -> DFR similarity
Allow specifying nested fields in simple_query_string

Fixes #5091
[docs] fixed errors in aggs docs
- error in nested aggs example
- error in terms aggs example
[TEST] added missing wait for yellow in put warmer REST test
Added the `DistanceUnit.NAUTICALMILES` enumeration
label with the corresponding *NM* and *nmi* unit
suffixes. Update the docs to match.

Closes #5085
Update get.asciidoc

Minor improvements.

curl -XHEAD doesn't actually print anything so I've changed to use -I which actually prints the headers received.
[DOCS] improved get docs

- added _version to response
- exists call use -XHEAD with -i flag to include headers in the output
Make sure that parent type is created explicitly.
Cleaned up the p/c integration tests to use shorter mapping definition, ensureGreen() and .get()
Fixed issue where highlighting in percolate existing doc api doesn't work (no highlight snippets)
Changed GeoEncodingTests to ensure accuracy always >1mm due to rounding errors with very small numbers
Add preserve original token option to ASCIIFolding

Closes #4931
Add support for `lowercase_expanded_terms` flag to simple_query_string

Default the flag to true, making simple_query_string behave similarly to
query_string

Fixes #5008
code coverage hookup