Add documentation for endpoint `sampleBuckets/install`

All of the information we have discussed in the documentation channel around adding documentation for this endpoint can be found in my initial post] and subsequent posts thereafter. 

I'm new to Couchbase, I'm a developer advocate and one of the things I am doing is blindly following documentation trying to put together a full stack JavaScript application.
The reason we do these exercises is because
1. I have to learn the stuff somehow and learning the hard way is always the best way to commit to memory for me.
2. More importantly, our customers and their developers have to take this path.
One thing I can imagine a developer wanting to do is "Install the travel-sample bucket" using a Dockerfile and a configure.sh script and either curl or calling the cbdocloader. I chose the cbdocloader because it is what is mentioned on the Install Sample Buckets page:
https://docs.couchbase.com/server/6.0/manage/manage-settings/install-sample-buckets.html
and after scanning the entire documentation for REST Endpoints and not finding anything for installing buckets (with indexes preferably).
https://docs.couchbase.com/server/current/rest-api/rest-intro.html
I was informed in the #engineering channel that there is a REST endpoint,
I would imagine that someone at some point had to create documentation for the endpoint:
localhost:8091/sampleBuckets/install and how to use it. I have found several situations where I felt our endpoints did not have enough information for me (someone who is not familiar with Couchbase) to get their job done without asking someone here who is on the engineering team. Our customers typically do not have that luxury.
I think we should create a ticket to get this added to the documentation. Can anyone point me to the right project in JIRA to create this ticket? Also I'm thinking of another ticket for the cbdocloader, because it doesnt install indexes only the data bucket. (edited)

TLDR: When exploring the docs for API Endpoints, there is no documentation around the endpoint for adding example buckets, only a page that documents how to do it in the Couchbase Server UI and a command that one can use from `cbdocloader`, this can be found at:

https://docs.couchbase.com/server/6.0/manage/manage-settings/install-sample-buckets.html

I believe that we should have the restful endpoint documented on that page and a link to the API reference list where further and more documented version of this endpoint would be.