v1.2.0

### Releases v1.2.0

1. Add support to **LAN8720** Ethernet for many **STM32F4** (F407xx, NUCLEO_F429ZI) and **STM32F7** (DISCO_F746NG, NUCLEO_F746ZG, NUCLEO_F756ZG) boards.
2. Add LAN8720 examples
3. Add Packages' Patches for STM32 to use LAN8720 with STM32Ethernet and LwIP libraries
4. Add Table-of-Contents

Author: khoih-prog

README.md

@@ -18,7 +18,7 @@
   * [Why Async is better](#why-async-is-better)
   * [Currently supported Boards](#currently-supported-boards)
 * [Changelog](#changelog)
-  * [Releases v1.2.0](#releases-v130)
+  * [Releases v1.2.0](#releases-v120)
   * [Initial Releases v1.1.0](#initial-releases-v110)
 * [Prerequisites](#prerequisites)
 * [Installation](#installation)
@@ -64,7 +64,7 @@
 ---
 ---
 
-### Why do we need this Async [AsyncUDP_STM32 library](https://github.com/khoih-prog/AsyncUDP_STM32)
+### Why do we need this [AsyncUDP_STM32 library](https://github.com/khoih-prog/AsyncUDP_STM32)
 
 #### Features