docs: update documentation and fix small grammar mistake (#178)

This commit updates documentation to be consistent with our init command. I also made a small grammar mistake in a previous commit. Fixing it here

Author: karencfv

docs/ecctl-getting-started.asciidoc

@@ -113,7 +113,15 @@ $ ecctl init
 Welcome to the Elastic Cloud CLI! This command will guide you through authenticating and setting some default values.
 
 Missing configuration file, would you like to initialise it? [y/n]: y
-Enter the URL of your ECE installation: https://192.168.44.10:12434
+
+Select which type of Elastic Cloud offering will you be working with:
+  [1] Elasticsearch Service (default).
+  [2] Elastic Cloud Enterprise (ECE).
+  [3] Elasticsearch Service Private (ESSP).
+
+Please enter your choice: 1
+
+Using "https://api.elastic-cloud.com" as the API endpoint.
 
 What default output format would you like?
   [1] text - Human-readable output format, commands with no output templates defined will fall back to JSON.

pkg/ecctl/init.go

@@ -78,7 +78,7 @@ const (
 
 var (
 	hostChoiceMsg = `
-Select which type of Elastic Cloud offering will you be working with:
+Select which type of Elastic Cloud offering you will be working with:
   [1] Elasticsearch Service (default).
   [2] Elastic Cloud Enterprise (ECE).
   [3] Elasticsearch Service Private (ESSP).