James Rodewig 131ce74840
[DOCS] Relocate thread pools content (#55814) (#57432)
Moves [thread pools content][0] from [Modules][1] to
[Configuring Elasticsearch][2].

Supporting changes:
* Changes page title to "Thread pools"
* Increments several headings
* Removes several unneeded `[float]` attributes
* Updates the anchors of several headings

Relates to #53307

[0]: https://www.elastic.co/guide/en/elasticsearch/reference/master/modules-threadpool.html
[1]: https://www.elastic.co/guide/en/elasticsearch/reference/master/modules.html
[2]: https://www.elastic.co/guide/en/elasticsearch/reference/master/settings.html

Co-authored-by: debadair <debadair@elastic.co>
2020-06-01 11:46:16 -04:00
..
2020-05-06 13:41:47 -04:00