Logo added in title bar of the Website!

[Sourav61]

Issue Number

fixes #69

Describe the changes you've made

**Made the following changes :

1. In index.html, replaced <meta name="og:image" content="static/logo1.png"> with  <meta name="og:image" content="/static/images/MEDICARE.png"> 

2. In index.html, also replaced <link rel="icon" href="{{ url_for('static', filename = 'logo1.png') }}" type="image/icon type"> with <link rel="icon" href="/static/images/MEDICARE.png" type="image/icon type"> 

Describe if there is any unusual behaviour of your code(Write NA if there isn't)

NA

Additional context (OPTIONAL)

[Sourav61]

@akshitadixit pls merge if there are no conflicts or if needed, i will make a new PR.