docs: add references to Elasticsearch Service (#267)

Adds references to Elasticsearch Service in our documentation for the release of ESS public API

Author: karencfv

README.md

@@ -4,13 +4,9 @@
 
 NOTE: **You are looking at the documentation for a beta release. Please keep in mind that backwards-incompatible changes might be introduced in future releases.**
 
-<!-- `ecctl` is the CLI for the Elasticsearch Service and Elastic Cloud Enterprise APIs. It wraps typical operations commonly needed by operators within a single command line tool.
+`ecctl` is the CLI for the Elasticsearch Service and Elastic Cloud Enterprise APIs. It wraps typical operations commonly needed by operators within a single command line tool.
 
-The goal of this project is to provide an easier way to interact with the Elasticsearch Service and Elastic Cloud Enterprise APIs, ensuring each one of the provided commands is thoroughly tested.  -->
-
-`ecctl` is the CLI for the Elastic Cloud Enterprise API. It wraps typical operations commonly needed by Elastic Cloud Enterprise (ECE) operators within a single command line tool.
-
-The goal of this project is to provide an easier way to interact with the Elastic Cloud Enterprise (ECE) API, ensuring each one of the provided commands is thoroughly tested.
+The goal of this project is to provide an easier way to interact with the Elasticsearch Service and Elastic Cloud Enterprise APIs, ensuring each one of the provided commands is thoroughly tested.
 
 Note that, right now, `ecctl` targets ECE installations only. There are, however, plans to support public Elasticsearch Service API in the future.
 

docs/ecctl-getting-started.asciidoc

@@ -3,7 +3,7 @@
 
 beta[]
 
-{p} is the CLI for the Elastic Cloud Enterprise API. 
+{p} is the CLI for the Elasticsearch Service and Elastic Cloud Enterprise APIs.
 It wraps typical operations commonly needed by operators within a single command line tool.
 
 Benefits of {p}:

scripts/changelog.tpl.adoc

@@ -8,7 +8,7 @@
 
 Welcome to the vVERSION_REPLACE release of {n}. This version brings new features, some breaking changes, and bug fixes.
 
-Elastic cloud control (ecctl) is Elastic’s CLI interface to manage the Elastic Cloud Enterprise platform (ECE) and Elasticsearch Service (ESS) and is now open for a public beta.
+Elastic cloud control (ecctl) is Elastic’s CLI interface to manage Elasticsearch Service (ESS) and Elastic Cloud Enterprise (ECE). It is now open for a public beta.
 
 Download the release binaries: