docs: fix shell quote

examples/live-audio/script.sh

@@ -16,4 +16,4 @@ docker run --detach --gpus=all --publish 8000:8000 --volume ~/.cache/huggingface
 
 # `pv` is used to limit the rate at which the audio is streamed to the server. Audio is being streamed at a rate of 32kb/s(16000 sample rate * 16-bit sample / 8 bits per byte = 32000 bytes per second). This emulutes live audio input from a microphone: `ffmpeg -loglevel quiet -f alsa -i default -ac 1 -ar 16000 -f s16le`
 # shellcheck disable=SC2002
-cat audio.pcm | pv -qL 32000 | websocat --no-close --binary ws://localhost:8000/v1/audio/transcriptions?language=en
+cat audio.pcm | pv -qL 32000 | websocat --no-close --binary 'ws://localhost:8000/v1/audio/transcriptions?language=en'