Exercise: FormGroup Basics

https://stackblitz.com/fork/rxngforms-formgroupbasic-exercise

Exercise Instructions:
1. Fix the errors on lines 24 & 25. (hint: Is this how you would initialize keys/values in an object that the FormGroup constructor expects?)
2. In the template, update the inputs' directives to properly bind to a FormControl that exists inside a FormGroup.
3. Verify that the expected initial text is displaying in the browser.