Update msr3-controlling-dc-motor.md with correct duty range

[kerbinite]

The tutorial describes the accepted range of values for indicating the work duty of the motors as 0-100. In testing, it is determined that the actual range of values is 0-255. A value of 100 is actually less than half of the maximum allowed work duty.

What This PR Changes

• Only changes the listed maximum work duty from 100 to 255.

Contribution Guidelines

• I confirm that I have read the contribution guidelines and comply with them.

[CLAassistant]

All committers have signed the CLA.

[jhansson-ard]

Hello @kerbinite !

Please sign the CLA so that we can review your PR properly ⭐

Thank you for your contribution!

[kerbinite]

Hi @jhansson-ard ! 👋

It seems that my commit was unable to be merged due to a missing apiToken for Cloudflare. I'm not sure what needs to be done to resolve this, but I'm very appreciative of your attention here, and all your work maintaining this! 👍

I'm running an Arduino course for high school students, and I want to ensure that they aren't confused by the documentation. Thank you so much!!!

[jhansson-ard]

Yes, sorry about that. The Cloudflare Pages action is an unfortunate name, it is really just creating a preview of the page - which in this case is no issue. All the important checks have gone through ⭐

I will tag the relevant reviewers and let them have a look!

Thank you!