Fix minor typo in ESP32S2 readme

Author: hugodahl

ports/esp32s2/README.md

@@ -7,7 +7,7 @@ This port adds the ESP32-S2 line of modules from Espressif to Circuitpython. ESP
 - **bindings/** contains some required bindings to the ESP-IDF for exceptions and memory.
 - **boards/** contains the configuration files for each development board and breakout available on the port.
 - **common-hal/** contains the port-specific module implementations, used by shared-module and shared-bindings.
-- **esp-idf/** contains the Espressif IoT development framework installation, includign all the drivers for the port.
+- **esp-idf/** contains the Espressif IoT development framework installation, including all the drivers for the port.
 - **modules/** contains information specific to certain ESP32-S2 hardware modules, such as the pins used for flash and RAM on the WROVER and WROOM.
 - **peripherals/** contains peripheral setup files and peripheral mapping information, sorted by family and sub-variant. Most files in this directory can be generated with the python scripts in **tools/**.
 - **supervisor/** contains port-specific implementations of internal flash, serial and USB, as well as the **port.c** file, which initializes the port at startup.