update esp32 toolchain download link

Author: Brian Friedkin

documentation/Moddable SDK – Getting Started.md

@@ -88,7 +88,7 @@ This document provides an introduction to getting started building apps with the
 
 4. Download the [esptool](https://github.com/igrr/esptool-ck/releases/download/0.4.12/esptool-0.4.12-osx.tar.gz). Untar the package and rename the directory `esptool`. Copy the `esptool` directory into the `~/esp32` directory.
 
-5. Download and untar the [ESP32 GCC toolchain](https://dl.espressif.com/dl/xtensa-esp32-elf-osx-1.22.0-73-ge28a011-5.2.0.tar.gz). Copy the extracted `xtensa-esp32-elf` directory into your `~/esp32` directory.
+5. Download and untar the [ESP32 GCC toolchain](https://dl.espressif.com/dl/xtensa-esp32-elf-osx-1.22.0-75-gbaf03c2-5.2.0.tar.gz). Copy the extracted `xtensa-esp32-elf` directory into your `~/esp32` directory.
 
 6. Clone the `ESP-IDF` GitHub repository into your `~/esp32` directory. Make sure to specify the `--recursive` option: