Remove portaudio-go in Go API examples. (#2317)

Replace the deprecated portaudio-go integration with malgo in the Go real-time 
speech recognition example and correct version string typos in the Node.js examples.

- Fixed “verison” typo in Node.js console logs.
- Swapped out portaudio-go for malgo in the Go microphone example, 
   introducing initRecognizer, callback-driven streaming, and sample conversion.
- Removed portaudio-go from go.mod.

go-api-examples/real-time-speech-recognition-from-microphone/go.mod

@@ -1,7 +1,3 @@
 module real-time-speech-recognition-from-microphone
 
 go 1.17
-
-require (
-	github.com/csukuangfj/portaudio-go v1.0.3
-)