Improve the UI of learn git and github page

[Sneha123-zudo]

Description

I had done the changes in git page , please check my pull request.

Category

• [ ] Documentation
• [ ] Resource Addition
• [ ] Codebase
• [x] User Interface
• [ ] Feature Request

Related Issue

Fixes #368

Checklist

• [x] I have gone through the CONTRIBUTING guide
• [ ] The name of the resource is spelled correctly (if applicable)
• [ ] The link to the resource is working (if applicable)
• [ ] The resource is added in the correct format (if applicable)
• [x] I have tested changes on my local computer (if applicable)

[netlify[bot]]

✅ Deploy Preview for openpedia ready!

Name	Link
🔨 Latest commit	25e404ac51297e948bac2b6b6a4a4d5b49505b3f
🔍 Latest deploy log	https://app.netlify.com/sites/openpedia/deploys/65d9f4fb05edbe000835d870
😎 Deploy Preview	https://deploy-preview-369--openpedia.netlify.app
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