docs: set correct pkg.go.dev path in README badge

Signed-off-by: deadprogram <ron@hybridgroup.com>

Author: deadprogram

README.md

@@ -2,7 +2,7 @@
 
 [![Go Bluetooth](./images/gobluetooth.png)](https://tinygo.org/bluetooth)
 
-[![PkgGoDev](https://pkg.go.dev/badge/pkg.go.dev/github.com/tinygo-org/bluetooth)](https://pkg.go.dev/github.com/tinygo-org/bluetooth)
+[![PkgGoDev](https://pkg.go.dev/badge/pkg.go.dev/tinygo.org/x/bluetooth)](https://pkg.go.dev/tinygo.org/x/bluetooth)
 [![CircleCI](https://circleci.com/gh/tinygo-org/bluetooth/tree/dev.svg?style=svg)](https://circleci.com/gh/tinygo-org/bluetooth/tree/dev)
 
 Go Bluetooth is a cross-platform package for using [Bluetooth Low Energy](https://en.wikipedia.org/wiki/Bluetooth_Low_Energy) hardware from the Go programming language.