Validation example broken

[meowgorithm]

Per #1146, the validation example in Bubble Tea doesn't

We should also change it to not be a credit card example as it can lead users down the road of accepting credit card numbers via SSH, which presents an attack vector.

[sriharish]

Hi @meowgorithm, I've created a draft PR, but could use your suggestion for generating the terminal recording with a similar theme and environment. Thank you!