Added Hover effect in sidebar

[danishhansari]

🛠️ Fixes Issue

👨‍💻 Changes proposed

Added a hover effect in sidebar item

✔️ Check List (Check all the applicable boxes)

• [x] My code follows the coding standards of this project.
• [x] This PR does not contain plagiarized content.
• [x] The title of my pull request is a short description of the requested changes.

📄 Note to reviewers

📷 Screenshots

[danishhansari]

I am beginner in open source i try to make changes as much I know