[pwm] Fix handling of "maxDutyCycle" parameter value (#12197)

[pwm] Fix handling of "maxDutyCycle" parameter value (#12197)

* [pwm] Fix handling of "maxDutyCycle" parameter value

Signed-off-by: Andriy Yemets <cyborg.andy@gmail.com>
* [pwm] Clarify behavior of the parameters

Signed-off-by: Andriy Yemets <cyborg.andy@gmail.com>
* [pwm] Update README.md (#12196)

Fixed description for maxDutycycle parameter
Added two new parameters: equateMinToZero and equateMaxToHundred

Signed-off-by: Andriy Yemets <cyborg.andy@gmail.com>
* Update bundles/org.openhab.automation.pwm/src/main/java/org/openhab/automation/pwm/internal/handler/PWMTriggerHandler.java

Signed-off-by: Fabian Wolter <github@fabian-wolter.de>
* Update bundles/org.openhab.automation.pwm/src/main/java/org/openhab/automation/pwm/internal/handler/PWMTriggerHandler.java

Signed-off-by: Fabian Wolter <github@fabian-wolter.de>
Signed-off-by: Andriy Yemets <cyborg.andy@gmail.com>
Signed-off-by: Fabian Wolter <github@fabian-wolter.de>
Co-authored-by: Fabian Wolter <github@fabian-wolter.de>