Update README.md

Fixed typo in wiki article title

Author: firedev

README.md

@@ -797,7 +797,7 @@ Comparison:
 
 ## Less idiomatic but with significant performance ruby
 
-Checkout: https://github.com/JuanitoFatas/fast-ruby/wiki/Less-idiomatic-but-with-significant-performance-diffrence
+Checkout: https://github.com/JuanitoFatas/fast-ruby/wiki/Less-idiomatic-but-with-significant-performance-difference
 
 
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