Merge pull request #1382 from arduino/karlsoderby/esp32pins

[Nano-ESP32] Update PWM section

Author: karlsoderby

content/hardware/03.nano/boards/nano-esp32/tech-specs.yml

@@ -7,7 +7,7 @@ Pins:
   Built-in LED Pin: 13
   Digital I/O Pins: 14
   Analog input pins: 8
-  PWM pins: 5
+  PWM pins: All pins (max 5 simultaneously)
   External interrupts: All digital pins
 Connectivity:
   Wi-Fi®: u-blox® NORA-W106 (ESP32-S3)

content/hardware/03.nano/boards/nano-esp32/tutorials/cheat-sheet/cheat-sheet.md

@@ -251,7 +251,7 @@ Pulse width modulation (PWM) is supported on **all digital pins (D0-D13)** as we
 analogWrite(pin,value);
 ```
 
-***Due to timer restrictions, only 4 PWM signals can be generated simultaneously.***
+***Due to timer restrictions, only 5 PWM signals can be generated simultaneously.***
 
 ## I2C