Update Python3 Hello World template

[GuillaumeFalourd]

What do you want ?

• Update the Python3 hello-world templates to match the rit demo hello-world formula : https://github.com/ZupIT/ritchie-formulas/tree/master/demo/hello-world with the same inputs and the same display.

Why is this needed ?

• It would help the Python3 programmer to have a template with an example of each kind of inputs available with Ritchie.

• It would also help with Ritchie first contact as the demo formula (rit demo hello-world) will be the first formula executed by many users (following the documentation: https://docs.ritchiecli.io/how-to/how-to-run-formulas/commands)

[ravindrabhargava]

let me work on it thanks

[GuillaumeFalourd]

Sure, I've assigned it to you. Thank you for contributing @ravindrabhargava 👍