doc: nrf_connect: update nRF7002 DK links & image (#25728)

* doc: nrf_connect: update nRF7002 DK links & image

Updated links to nRF7002 DK product page.
Updated the DK image.
Removed ToCs from examples, as these are not needed anymore.
KRKNWK-16505.

Signed-off-by: Grzegorz Ferenc <Grzegorz.Ferenc@nordicsemi.no>

* Restyled by prettier-markdown

---------

Signed-off-by: Grzegorz Ferenc <Grzegorz.Ferenc@nordicsemi.no>
Co-authored-by: Restyled.io <commits@restyled.io>
diff --git a/examples/lock-app/nrfconnect/README.md b/examples/lock-app/nrfconnect/README.md
index 7aef2c9..cad3b52 100644
--- a/examples/lock-app/nrfconnect/README.md
+++ b/examples/lock-app/nrfconnect/README.md
@@ -22,31 +22,6 @@
 
 <hr>
 
--   [Overview](#overview)
-    -   [Bluetooth LE advertising](#bluetooth-le-advertising)
-    -   [Bluetooth LE rendezvous](#bluetooth-le-rendezvous)
-    -   [Device Firmware Upgrade](#device-firmware-upgrade)
--   [Requirements](#requirements)
-    -   [Supported devices](#supported-devices)
-    -   [IPv6 network support](#ipv6-network-support)
--   [Device UI](#device-ui)
--   [Setting up the environment](#setting-up-the-environment)
-    -   [Using Docker container for setup](#using-docker-container-for-setup)
-    -   [Using native shell for setup](#using-native-shell-for-setup)
--   [Building](#building)
-    -   [Removing build artifacts](#removing-build-artifacts)
-    -   [Building with release configuration](#building-with-release-configuration)
-    -   [Building with Device Firmware Upgrade support](#building-with-device-firmware-upgrade-support)
--   [Configuring the example](#configuring-the-example)
-    -   [Example build types](#example-build-types)
--   [Flashing and debugging](#flashing-and-debugging)
--   [Testing the example](#testing-the-example)
-    -   [Testing using Linux CHIPTool](#testing-using-linux-chiptool)
-    -   [Testing using Android CHIPTool](#testing-using-android-chiptool)
-    -   [Testing Device Firmware Upgrade](#testing-device-firmware-upgrade)
-
-<hr>
-
 ## Overview
 
 This example is running on the nRF Connect platform, which is based on Nordic
@@ -171,11 +146,11 @@
 
 The example supports building and running on the following devices:
 
-| Hardware platform                                                                                               | Build target               | Platform image                                                                                                                                   |
-| --------------------------------------------------------------------------------------------------------------- | -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
-| [nRF52840 DK](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK)                       | `nrf52840dk_nrf52840`      | <details><summary>nRF52840 DK</summary><img src="../../platform/nrfconnect/doc/images/nRF52840_DK_info-medium.jpg" alt="nRF52840 DK"/></details> |
-| [nRF5340 DK](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF5340-DK)                         | `nrf5340dk_nrf5340_cpuapp` | <details><summary>nRF5340 DK</summary><img src="../../platform/nrfconnect/doc/images/nRF5340_DK_info-medium.jpg" alt="nRF5340 DK"/></details>    |
-| [nRF7002 DK](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/ug_nrf7002.html#nrf7002dk-nrf5340) | `nrf7002dk_nrf5340_cpuapp` | <details><summary>nRF7002DK</summary><img src="../../platform/nrfconnect/doc/images/nrf7002dk.jpg" alt="nRF7002 DK"/></details>                  |
+| Hardware platform                                                                         | Build target               | Platform image                                                                                                                                   |
+| ----------------------------------------------------------------------------------------- | -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ |
+| [nRF52840 DK](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK) | `nrf52840dk_nrf52840`      | <details><summary>nRF52840 DK</summary><img src="../../platform/nrfconnect/doc/images/nRF52840_DK_info-medium.jpg" alt="nRF52840 DK"/></details> |
+| [nRF5340 DK](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF5340-DK)   | `nrf5340dk_nrf5340_cpuapp` | <details><summary>nRF5340 DK</summary><img src="../../platform/nrfconnect/doc/images/nRF5340_DK_info-medium.jpg" alt="nRF5340 DK"/></details>    |
+| [nRF7002 DK](https://www.nordicsemi.com/Products/Development-hardware/nRF7002-DK)         | `nrf7002dk_nrf5340_cpuapp` | <details><summary>nRF7002 DK</summary><img src="../../platform/nrfconnect/doc/images/nRF7002-DK_Front-small.png" alt="nRF7002 DK"/></details>    |
 
 <hr>