Changed Giveaway Icons, It was choppy cut-outs before in giveaway.html

[error9098x]

Closes #724

🛠️ Fixes Issue

Changed the Giveaway Icons

👨‍💻 Changes proposed

✔️ Check List (Check all the applicable boxes)

• [x] My code follows the code style 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.

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📷 Screenshots

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[error9098x]

Please add hacktoberfest-accepted tag :) thanks

[error9098x]

@SauravMukherjee44 @IAmTamal Please check this out :)