Fix typo in README.md (#36)

Author: jwetzell

README.md

@@ -3,7 +3,7 @@
 > _Warning_: This is experimental and is still in the alpha phase. Changes will
 > be made without warning. Please wait before you start writing new bindgens.
 
-This repository houses the prototype for bingden for Go plug-ins in XTP. It's
+This repository houses the prototype for bindgen for Go plug-ins in XTP. It's
 based on the [XTP Schema](https://docs.xtp.dylibso.com/docs/concepts/xtp-schema)
 as the driving document. This document will be used to generate code and
 documentation for plug-in systems and is specifically tailored to