Fix state of switch for CPX

[xnkevinnguyen]

Description:

After revision of the doc, the True state of the switch should be at the left and False at the right. See https://learn.adafruit.com/circuitpython-made-easy-on-circuit-playground-express/slide-switch.

Reported here: #344

Repro steps:
1.Run this code

from adafruit_circuitplayground import cp

while True:
    if cp.switch:
        cp.pixels[0] = (0, 0, 255)
    else:
        cp.pixels[0] = (0, 0, 0)

2. toggle the switch
   Current behaviour: The led will turn ON if the switch is on the right

Expected behaviour: The led will turn ON if the swith is on the left.

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Limitations:

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Testing:

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• Test A
• Test B

Checklist:

• My code follows the style guidelines of this project
• My code has been formatted with npm run format and passes the checks in npm run check
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[nasadigital]

I would expect the switch to be turned off by default, would you agree?

[xnkevinnguyen]

You're right. After looking at the pictures, it seems that default is off.

[nasadigital]

Just a comment, the switch is red when turned off and grey when turned on. That's fine with me, since previously it used to be red when turned on but you might want to think about it.

[xnkevinnguyen]

Just a comment, the switch is red when turned off and grey when turned on. That's fine with me, since previously it used to be red when turned on but you might want to think about it.

Yea, we wanted to inverse it since users were expecting the opposite. Maybe Green would be a better choice then gray for ON. But will be thought of in the future