Update README.md

fix small typo

Author: peczenyj

README.md

@@ -353,7 +353,7 @@ fmt.Print(s)
 
 ### Special Thanks
 
-This package absolutely 100% could not have been written without the help of Thorsten Ball's incredible book, [Writing an Interpeter in Go](https://interpreterbook.com).
+This package absolutely 100% could not have been written without the help of Thorsten Ball's incredible book, [Writing an Interpreter in Go](https://interpreterbook.com).
 
 Not only did the book make understanding the process of writing lexers, parsers, and asts, but it also provided the basis for the syntax of Plush itself.