tiup playground，the parameter is incorrect, but the command did not report an error

[WalterWj]

Feature Request

Is your feature request related to a problem? Please describe:

tiup --T tidb playground

In the command, the parameter of --T was wrong (it should be -T in fact), but the command did not report an error

tiup version：1.5.2 tiup Describe the feature you'd like:

Why the featue is needed:

When you want to pass in wrong parameters, you will report an error. This problem is better positioned

Describe alternatives you've considered:

Teachability, Documentation, Adoption, Migration Strategy:

[tisonkun]

@WalterWj Thanks for your reporting! May you help convert the issue to English?

[WalterWj]

@WalterWj Thanks for your reporting! May you help convert the issue to English?

done