docs: update typo in readme

dpopp07 · dpopp07 · commit aab649d4f7b6 · 2019-10-15T15:06:34.000-05:00
diff --git a/README.md b/README.md
@@ -718,7 +718,7 @@ textToSpeech
     return textToSpeech.repairWavHeaderStream(audio);
   })
   .then(repairedFile => {
-    fs.writeFileSync('audio.wav', audio);
+    fs.writeFileSync('audio.wav', repairedFile);
     console.log('audio.wav written with a corrected wav header');
   })
   .catch(err => {
