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Update PWM.md

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@ -65,6 +65,7 @@ The following PWM resources are available:
* ESP32: 16 Channels / 8 Timers (arranged in two distinct sets of 8 Channels and 4 Timers) * ESP32: 16 Channels / 8 Timers (arranged in two distinct sets of 8 Channels and 4 Timers)
* ESP32-S2: 8 Channels / 4 Timers * ESP32-S2: 8 Channels / 4 Timers
* ESP32-C3: 6 Channels / 4 Timers * ESP32-C3: 6 Channels / 4 Timers
* ESP32-S3: 8 Channels / 4 Timers
HomeSpan *automatically* allocates Channels and Timers to LedPin and ServoPin objects as they are instantiated. Every pin assigned consumes a single Channel; every *unique* frequency specified among all channels (within the same set, for the ESP32) consumes a single Timer. HomeSpan will conserve resources by re-using the same Timer for all Channels operating at the same frequency. *HomeSpan also automatically configures each Timer to support the maximum duty-resolution possible for the frequency specified.* HomeSpan *automatically* allocates Channels and Timers to LedPin and ServoPin objects as they are instantiated. Every pin assigned consumes a single Channel; every *unique* frequency specified among all channels (within the same set, for the ESP32) consumes a single Timer. HomeSpan will conserve resources by re-using the same Timer for all Channels operating at the same frequency. *HomeSpan also automatically configures each Timer to support the maximum duty-resolution possible for the frequency specified.*