Update shared cloud sign up instructions to account for serverless GA being the new default experience

Author: florent-leborgne

shared/attributes.asciidoc

@@ -191,7 +191,7 @@ Elastic Cloud
 :cloud:       https://www.elastic.co/guide/en/cloud/current
 :ess-utm-params: ?page=docs&placement=docs-body
 :ess-baymax:  {ess-utm-params}
-:ess-trial:   https://www.elastic.co/cloud/elasticsearch-service/signup{ess-utm-params}
+:ess-trial:   https://cloud.elastic.co/registration{ess-utm-params}
 :ess-product: https://www.elastic.co/cloud/elasticsearch-service{ess-utm-params}
 :ess-console: https://cloud.elastic.co{ess-utm-params}
 :ess-console-name: {ess} Console

shared/cloud/ess-getting-started.asciidoc

@@ -4,19 +4,13 @@
 //[[cloud-ess-getting-started]]
 //== Get started with {ess}
 
-There's no faster way to get started than with our hosted {ess} on Elastic Cloud:
+There's no faster way to get started than with Elastic Cloud:
 
 // tag::generic[]
-. {ess-trial}[Get a free trial].
+. {ess-trial}[Sign up for a free trial].
 
-. Log into {ess-console}[Elastic Cloud].
-
-. Click *Create deployment*.
-
-. Give your deployment a name.
-
-. Click *Create deployment* and download the password for the `elastic` user.
+. Follow the on-screen steps to create your first project.
 // end::generic[]
 
-That’s it! Now that you are up and running, it’s time to get some data into
-{kib}. {kib} will open as soon as your deployment is ready.
+That’s it! You're ready to get some data into your
+project.