refactor: Fixed typos in about us page and made design css consistent

[ArshadChowdhury]

What does this PR do?

Fixes #

Typos in about us page.
Design css made more consistent.

Requirement/Documentation

• If there is a requirement document, please, share it here.
• If there is ab UI/UX design document, please, share it here.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How should this be tested?

• Are there environment variables that should be set? - NO
• What are the minimal test data to have? - N/A
• What is expected (happy path) to have (input and output)? - N/A
• Any other important info that could help to test that PR - N/A

Mandatory Tasks

• Make sure you have self-reviewed the code. A decent size PR without self-review might be rejected.

Checklist

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Name	Status	Preview	Comments	Updated (UTC)
review-app	❌ Failed (Inspect)			Oct 31, 2023 1:16pm

[github-actions]

Thank you for following the naming conventions! 🙏

[github-actions]

Good work @ArshadChowdhury 😃,

Thank you for raising the PR. Soon, the owner/maintainers will review it and offer feedback/suggestions.
Meanwhile if you enjoy contributing to the project, please consider giving it a star ⭐.

[hemantwasthere]

LGTM