* Adding Getting Help section
Add getting help section in the troubleshooting guide to be pointed by health API when issues are too complicated to be addressed.
This is taken from https://www.elastic.co/guide/en/cloud/current/ec-get-help.html, someone might want to elaborate it a bit more?
* Fix broken partintro, modify headings, and update wording
Co-authored-by: Adam Locke <adam.locke@elastic.co>
