[bug] : the link for gorilla mux logo is broken

[SagarSingh2003]

Describe the bug

A clear and concise description of what the bug is.

• The logo of gorilla mux is not showing up in the readme file

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Versions

Go version: go version
package version: run git rev-parse HEAD inside the repo

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Steps to Reproduce

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Expected behavior

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Code Snippets

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