Update logo path in README accordingly

[paullo0106]

Proposed changes

Update logo path in README accordingly to the logo/ subfolder

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
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Further comments

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[jeongyoonlee]

Thanks for fixing this!