Updates 'Create and manage rules' page (elastic#202648)

### Overview

This PR updates the [Create and manage
rules](http://localhost:8000/guide/create-and-manage-rules.html) page:
- by adding a new screenshot showing how to navigate to the Rules page.
- updating the instructions based on this
[issue's](elastic/docs-content#96
) suggestion.

### Related issue

elastic/docs-content#96

(Based on my discussion with @tatianafinamor, this issue suggests
updating the [Kibana guide > Create and manage
rules](https://www.elastic.co/guide/en/kibana/master/create-and-manage-rules.html)
page, not the Serverless guide. Users need clearer guidance on how to
navigate to the **Rules** section.

docs/user/alerting/create-and-manage-rules.asciidoc

@@ -8,17 +8,21 @@
 The *{stack-manage-app}* > *{rules-ui}* UI provides a cross-app view of alerting.
 Different {kib} apps like {observability-guide}/create-alerts.html[*{observability}*],
 {security-guide}/prebuilt-rules.html[*Security*], <<geo-alerting,*Maps*>> and
-<<xpack-ml,*{ml-app}*>> can offer their own rules. *{rules-ui}* provides a
+<<xpack-ml,*{ml-app}*>> can offer their own rules. 
+
+You can find **Rules** in *Stack Management* > *Alerts and insights* > *Rules* in {kib} or by using
+the <<kibana-navigation-search,global search field>>.
+
+[role="screenshot"]
+image:images/stack-management-rules.png[Rules page navigation]
+
+*{rules-ui}* provides a
 central place to:
 
 * <<create-edit-rules,Create and edit>> rules
 * <<controlling-rules,Manage rules>> including enabling/disabling, muting/unmuting, and deleting
 * Drill down to <<rule-details,rule details>>
-* Configure settings that apply to all rules in the space
-
-[role="screenshot"]
-image:images/rules-ui.png[Example rule listing in {rules-ui}]
-// NOTE: This is an autogenerated screenshot. Do not edit it directly.
+* Configure rule settings
 
 For more information on alerting concepts and the types of rules and connectors
 available, go to <<alerting-getting-started>>.