Updates adaptive card to make use of passed in values

[BeigeBadger]

The sample code for doSomethingCommandHandler.ts provides values for the title and body properties that will never be used.

const cardData: CardData = {
      title: "doSomething command is added",
      body: "Congratulations! You have responded to doSomething command",
};

This is because doSomethingCommandResponse.json has hard coded values, instead of using the ${title} and ${body} directives.

I have fixed this behaviour.