Fix README link

README.md

@@ -93,6 +93,6 @@ its own evolution right now, and will not stabilize until Panama does
 Buoy itself resides in [lib/](./lib), and a small, simple example native
 library that's used for testing resides in [native/](./native). The Buoy
 bindings for the native test library live 
-[here](./lib/src/test/groovy/com/myworldvw/buoy/util) and provide a fairly
+[here](./lib/src/test/java/com/myworldvw/buoy/util) and provide a fairly
 complete example of Buoy's mapping features and some of its utility features
 as well.