Update printer-creality-ender6-2020.cfg

[Neelrhi]

Added in dimensions for the the custom 3D-printed mount.

[JamesH1978]

Thankyou for submitting a PR, our stock configurations are for bone stock printers as if they have just come out of the box from factory, as users may not have custom additions. This printer did not ship with a bltouch as standard, so therefore the code for it is commented out and left for the user to uncomment if they add this option.

Thanks
James

[github-actions]

Thank you for your contribution to Klipper. Unfortunately, a reviewer has not assigned themselves to this GitHub Pull Request. All Pull Requests are reviewed before merging, and a reviewer will need to volunteer. Further information is available at: https://www.klipper3d.org/CONTRIBUTING.html

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[bevanweiss]

@Neelrhi I'm unsure that this PR adds significant value.
As noted by James the Creality Ender 6 did not ship with a BLTouch, so such a configuration should never be the default for this printer. The commented out section in the current source represents the typical 'from Vendor' addition.
Adding as default, configurations for additional 3rd party items would almost certainly result in confusion for end users.

I believe you should close this PR.

[zimmertr]

If I had to guess, this user mistakenly opened this PR.

[github-actions]

This PR is being closed because it is currently not considered a good match for the master Klipper repository.

Best regards,
~ Your friendly GitIssueBot

PS: I'm just an automated script, not a human being.