[DOCS] Revises doc on adding data

[gchaps]

Summary

This docs updates the existing doc titled "Connecting to Elasticsearch" to include additional ways you can add data to Kibana.

Preview:
https://kibana_68038.docs-preview.app.elstc.co/guide/en/kibana/master/connect-to-elasticsearch.html

[elasticmachine]

Pinging @elastic/kibana-docs (Team:Docs)

[debadair]

LGTM. Left a few suggestions you can accept or discard as you see fit. :-)

[KOTungseth]

Suggested change

	== Adding data
	== Add data

[gchaps]

I'll make that change when I change the other titles in the section.

[KOTungseth]

Suggested change

	* Use the File Data Visualizer or GeoJSON Upload feature to quickly load
	* Quickly load data into Elasticsearch with the File Data Visualizer or GeoJSON Upload feature

[KOTungseth]

How about:

If you're not ready to use your own data, use the <<get-data-in, sample data sets>> to see all that you can do in {kib}.

[KOTungseth]

Do we really want to say File Data Visualizer or GeoJSON Upload feature before we tell them what these features are? I would pair down this list to:

• Load your data from a log file
• Index logs, metrics, events, and application data
• Connect Kibana to your Elasticsearch indices

Then get into the nitty gritty in the sections below.

[jgowdyelastic]

Load your data from a log file

It might be worth mentioning CSV files here also as they are a very common use case.

[KOTungseth]

How about:

Load your data from a log file

[KOTungseth]

Your'e not really adding data tutorials, you're using them.

[KOTungseth]

Suggested change

	You access the tutorials from the {kib} home page.
	You access the tutorials from the home page.

[KOTungseth]

Suggested change

	To visualize data in existing {es} indices, you
	To visualize data in {es} indices, you

[KOTungseth]

Suggested change

	create index patterns that match the names of the indices you want to explore. When you add data with the File Visualizer, GeoJSON Upload,
	create index patterns that match the names of the indices you want to explore. When you add data with the File Data Visualizer, GeoJSON Upload,

[KOTungseth]

To create an index pattern:

[jgowdyelastic]

This value is configurable up to 1GB in kibana's advanced settings. It might be worth mentioning in these docs.

[jgowdyelastic]

Load your data from a log file

It might be worth mentioning CSV files here also as they are a very common use case.