Fix Alexa smart home supported platforms (#29361)

source/_integrations/alexa.smart_home.markdown

@@ -456,18 +456,8 @@ See [Alexa Display Categories][alexa-display-categories] for a complete list
 
 Home Assistant supports the following integrations through Alexa using a Smart Home Skill. For Home Assistant Cloud Users, documentation can be found [here](https://www.nabucasa.com/config/amazon_alexa/).
 
-The following integrations are currently supported:
+The following platforms are currently supported:
 
-- [Requirements](#requirements)
-- [Create an Amazon Alexa Smart Home Skill](#create-an-amazon-alexa-smart-home-skill)
-- [Create an AWS Lambda Function](#create-an-aws-lambda-function)
-  - [Create an IAM Role for Lambda](#create-an-iam-role-for-lambda)
-  - [Add Code to the Lambda Function](#add-code-to-the-lambda-function)
-  - [Test the Lambda Function](#test-the-lambda-function)
-- [Configure the Smart Home Service Endpoint](#configure-the-smart-home-service-endpoint)
-- [Account Linking](#account-linking)
-- [Alexa Smart Home Integration Configuration](#alexa-smart-home-integration-configuration)
-- [Supported Platforms](#supported-platforms)
 - [Alarm Control Panel](#alarm-control-panel)
   - [Arming](#arming)
   - [Disarming](#disarming)
@@ -519,9 +509,6 @@ The following integrations are currently supported:
   - [Routines](#routines-2)
 - [Timer](#timer)
 - [Vacuum](#vacuum)
-- [Alexa Web-Based App](#alexa-web-based-app)
-- [Troubleshooting](#troubleshooting)
-- [Debugging](#debugging)
 
 ### Alarm Control Panel