[doc] fix the cli command readme, remove python binding (#223)

README.md

@@ -33,7 +33,7 @@ $ wespeaker --task diarization --audio_file audio.wav # TODO
 import wespeaker
 
 model = wespeaker.load_model('chinese')
-embedding = model.extract_embeding('audio.wav')
+embedding = model.extract_embedding('audio.wav')
 similarity = model.compute_similarity('audio1.wav', 'audio2.wav')
 ```
 
@@ -51,11 +51,6 @@ conda install pytorch=1.12.1 torchaudio=0.12.1 cudatoolkit=11.3 -c pytorch -c co
 pip install -r requirements.txt
 ```
 
-* If you just want to use the pretrained model, try the [python binding](https://github.com/wenet-e2e/wespeaker/tree/master/runtime/binding/python)!
-```shell
-pip3 install wespeakerruntime
-```
-
 ## 🔥 News
 * 2023.07.18: Support the kaldi-compatible PLDA and unsupervised adaptation, see [#186](https://github.com/wenet-e2e/wespeaker/pull/186).
 * 2023.07.14: Support the [NIST SRE16 recipe](https://www.nist.gov/itl/iad/mig/speaker-recognition-evaluation-2016), see [#177](https://github.com/wenet-e2e/wespeaker/pull/177).