replace undefined with err x is not defined

[Dev-anuj]

// code example 5

getName();
console.log(x);
console.log(getName)

function getName(){
console.log("Namaste JavaScript");
}

Output:

Namaste JavaScript

undefined

f getName(){ console.log("Namaste JavaScript); }

**for x it will come to err x is not defined. please check epi 3 notes

assign it to me i will love to contribute.**

[sohamsshah]

Thanks for pointing this out!
Please refer the comments on #4 as well while tackling this.