add-feature-tiers-note (#2595)

This PR adds a note to the main get started page to tell users that it
relates to Observability Complete and links to Logs Essentials.

Author: mdbirnstiehl

solutions/observability/get-started.md

@@ -14,6 +14,10 @@ products:
 
 # Get started with Elastic {{observability}} [observability-get-started]
 
+```{note}
+Use this guide to get started with the Observability Complete feature tier of {{obs-serverless}}. Refer to the [Logs Essentials getting started](/solutions/observability/get-started/logs-essentials.md) docs to get started with {{obs-serverless}} Logs Essentials. The [{{obs-serverless}} feature tiers](/solutions/observability/observability-serverless-feature-tiers.md) page details the difference between tiers.
+```
+
 New to Elastic {{observability}}? Discover more about our observability features and how to get started. The following instructions guides you through setting up your first Elastic {{observability}} deployment, collecting data from infrastructure and applications, and exploring your data.
 
 ## Get started with your use case [get-started-with-use-case]
@@ -118,7 +122,7 @@ Refer to [LLM observability](/solutions/observability/applications/llm-observabi
 
 :::::{dropdown} Steps for adding Synthetics monitoring
 1. Select **Add data** from the main menu and then select **Application**.
-2. Select **Synthetic monitor**. 
+2. Select **Synthetic monitor**.
 3. Select a [monitor type](/solutions/observability/synthetics/index.md).
 4. Fill out the details.
 5. (Optional) Add a [Playwright](https://playwright.dev/) script.

solutions/observability/get-started/logs-essentials.md

@@ -10,9 +10,8 @@ products:
 # Get started with {{obs-serverless}} Logs Essentials [logs-essentials-get-started]
 
 ```{note}
-Use this guide to get started with the Logs Essentials feature tier of {{obs-serverless}}. Refer to the main [{{observability}} getting started](/solutions/observability/get-started.md) docs to get started with {{obs-serverless}} Complete, which includes APM and Infrastructure metrics.
+Use this guide to get started with the Logs Essentials feature tier of {{obs-serverless}}. Refer to the main [{{observability}} getting started](/solutions/observability/get-started.md) docs to get started with {{obs-serverless}} Complete, which includes APM and Infrastructure metrics. The [{{obs-serverless}} feature tiers](../observability-serverless-feature-tiers.md) page details the difference between tiers.
 ```
-% Note should link to the feature tier comparison docs once published.
 
 New to {{obs-serverless}} Logs Essentials? Discover more about its features and how to get started. The following instructions guide you through setting up your first Elastic {{observability}} Logs Essentials deployment, collecting log data, and exploring your data.