Remove redundant Table of Contents in alexa documentation (#30831)

* Remove redundant Table of Content in alexa documentation

* Fix typo

---------

Co-authored-by: c0ffeeca7 <38767475+c0ffeeca7@users.noreply.github.com>

source/_integrations/alexa.smart_home.markdown

@@ -94,9 +94,9 @@ Steps to Integrate an Amazon Alexa Smart Home Skill with Home Assistant:
   - [Timer](#timer)
   - [Vacuum](#vacuum)
   - [Valve](#valve)
-    - [Open/Close](#openclose)
-    - [Set Valve Position](#set-valve-position)
-    - [Stop the Valve](#stop-the-valve)
+    - [Open/close](#openclose)
+    - [Set valve position](#set-valve-position)
+    - [Stop the valve](#stop-the-valve)
   - [Water heater](#water-heater)
     - [Set target temperature](#set-target-temperature)
     - [Operation Mode](#operation-mode)
@@ -464,79 +464,7 @@ 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 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)
-  - [Alert, Automation, Group](#alert-automation-group)
-  - [Binary sensor](#binary-sensor)
-    - [Routines](#routines)
-  - [Button, Input Button](#button-input-button)
-    - [Routines](#routines-1)
-    - [Doorbell announcement with binary\_sensor](#doorbell-announcement-with-binary_sensor)
-    - [Presence Detection with Binary Sensor](#presence-detection-with-binary-sensor)
-  - [Camera](#camera)
-  - [Climate](#climate)
-    - [Set Thermostat Temperature](#set-thermostat-temperature)
-    - [Thermostat Mode](#thermostat-mode)
-  - [Cover](#cover)
-    - [Open/Close/Raise/Lower](#opencloseraiselower)
-    - [Set Cover Position](#set-cover-position)
-    - [Set Cover Tilt](#set-cover-tilt)
-    - [Garage doors](#garage-doors)
-  - [Event entities](#event-entities)
-    - [Doorbell events](#doorbell-events)
-  - [Fan](#fan)
-    - [Fan speed](#fan-speed)
-    - [Fan Preset Mode](#fan-preset-mode)
-    - [Fan Direction](#fan-direction)
-    - [Fan Oscillation](#fan-oscillation)
-  - [Humidifier](#humidifier)
-    - [Humidifier target humidity](#humidifier-target-humidity)
-    - [Humidifier Mode](#humidifier-mode)
-  - [Image Processing](#image-processing)
-    - [Presence Detection Notification](#presence-detection-notification)
-  - [Input Number and Number](#input-number-and-number)
-  - [Light](#light)
-    - [Brightness](#brightness)
-    - [Color Temperature](#color-temperature)
-    - [Color](#color)
-  - [Lock](#lock)
-    - [Unlocking](#unlocking)
-  - [Media Player](#media-player)
-    - [Change Channel](#change-channel)
-    - [Speaker Volume](#speaker-volume)
-    - [Equalizer Mode](#equalizer-mode)
-    - [Inputs](#inputs)
-    - [Playback State](#playback-state)
-  - [Scene](#scene)
-  - [Script](#script)
-  - [Sensor](#sensor)
-  - [Switch, Input Boolean](#switch-input-boolean)
-    - [Routines](#routines-2)
-  - [Timer](#timer)
-  - [Vacuum](#vacuum)
-  - [Valve](#valve)
-    - [Open/Close](#openclose)
-    - [Set Valve Position](#set-valve-position)
-    - [Stop the Valve](#stop-the-valve)
-  - [Water heater](#water-heater)
-    - [Set target temperature](#set-target-temperature)
-    - [Operation Mode](#operation-mode)
-- [Alexa Web-Based App](#alexa-web-based-app)
-- [Troubleshooting](#troubleshooting)
-- [Debugging](#debugging)
+The following paragraphs explain the features of the platforms that are currently supported.
 
 ### Alarm control panel