Fix logo on Documentation!

[shreyasbapat]

🐞 Problem
The logo doesn't appear, rather alt_text appears!

🎯 Goal

💡 Possible solutions

📋 Steps to solve the problem

• Comment below about what you've started working on.
• Add, commit, push your changes
• Submit a pull request and add this in comments - Addresses #<put issue number here>
• Ask for a review in comments section of pull request
• Celebrate your contribution to this project 🎉