Remove quote at the end of the logo name

Author: bronzdoc

README.md

@@ -1,6 +1,6 @@
 # Skunk
 
-![skunk](https://github.com/fastruby/skunk/raw/master/logo.png")
+![skunk](https://github.com/fastruby/skunk/raw/master/logo.png)
 
 
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