want to enhance the favicon

[mayuri-agrawal]

want to change the favicon of the calculator-App. plz assign this issue to me for hactoberfest

[Emilance]

the app has a favicon already, let's see the new favicon you will like to use. go ahead @mayuri-agrawal , I will assign this to you , remember to star the repo to help reach more contributors who are looking for opensource opportunities