Fixed bug in README.md

[SaileePhal]

Description

Corrected the typing error in the introduction of ExamTime

Resolves: #195

Checklist

Before submitting this pull request, kindly verify that the ensuing checkpoints have been reached.

• Have you adhered to the repository's defined coding convention rules?
• Have you updated the 'documentation.md' file with the method/function documentation?
• Have you sent a message along with the result or response?
• Have you used the try-catch technique?
• Has the method/class been added to the documentation (md file)?

Screenshots

Before:

After:

Additional Notes/Comments

Sir I am not sure if for fixing bugs in documentation error the checklist needs to be ticked but just ticked it though it is NA.

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[github-actions]

Great job, @SaileePhal! 🎉 Thank you for submitting your pull request. Your contribution is valuable and we appreciate your efforts to improve our project.

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