fix: correct footer underline color in dark mode on scale recipe page

[DivyanshiSingh-23]

Description

This PR fixes a visual issue in the Scale Recipe page where the footer link underlines were not displaying correctly in dark mode.

Fixes #909

Type of change

• Bug fix
• New feature
• Improvement
• Documentation update

Screenshot

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code where necessary
• I have added tests that prove my fix is effective or that my feature works
• I have made corresponding changes to the documentation

[github-actions]

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