examples.md refers to non-existent phetioIDs

[samreid]

Discovered in phetsims/quantum-wave-interference#16, beers law lab and concentration refer to these phet-io IDs in examples.md, but they do not exist in the sim:

FAIL: greenhouseEffect.photonsScreen.view.cloudCheckbox.showCloudCheckboxProperty
FAIL: greenhouseEffect.wavesScreen.view.cloudCheckbox.showCloudCheckboxProperty

[jessegreenberg]

Sorry, I am not familiar with this. But I do see this in the migration processor:

    // Converted to common code solution in https://github.com/phetsims/scenery/issues/1641#issuecomment-2215398995
    new RenamePhetioElement( 'cloudCheckbox.showCloudCheckboxProperty', 'cloudCheckbox.selfVisibleProperty' ),
    ...uninstrumentAboutDialogMenuItemVisible( simName ),
    radioButtonEnabledPropertyUninstrumented,
    new DeleteUninstrumentedPhetioElement( '.comboBox.button.enabledProperty' ),
    new DeleteUninstrumentedPhetioElement( '.comboBox.button.visibleProperty' ),

Does that mean we can just remove from examples.md? From the git history, I can see that @arouinfar is the lead for this, assigning to her. @arouinfar would you like me to change anything?

[arouinfar]

Thanks for the paper trail @jessegreenberg.

I updated the offending phetioIDs in examples.md in the above commit. Since phetsims/scenery#1641 (comment) happened after the latest release branch was created, the behavior in production is fine. We'll pick up this change in the next release. Marking as fixed-awaiting-deploy.