fix(@angular/cli): typo in error message

[RiccardoBracci]

This change resolves the error in the console if the nodejs version is not supported showing the actual version instead of "undefined".

Node.js version undefined detected.
The Angular CLI requires a minimum Node.js version of either v10.13 or v12.0.

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[RiccardoBracci]

@googlebot I signed it!

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[dgp1130]

Also merged to 9.0.x patch branch.

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