Update navbar.component.scss

[Devrajsinh-Gohil]

updated navBar hover issue: #125

a simple change to make navBar hover better. just changed text color to white instead of red on hover.

• image:

Close #125

Checklist:

• [x] I have mentioned the issue number in my Pull Request.
• [] I have commented my code, particularly in hard-to-understand areas
• [] I have created a helpful and easy to understand README.md

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