Merge pull request #232 from NexaAI/perry/convert-and-quantize

fix readme installation inconsistency

README.md

@@ -86,7 +86,7 @@ We have released pre-built wheels for various Python versions, platforms, and ba
 >
 > 1. If you want to use <strong>ONNX model</strong>, just replace `pip install nexaai` with `pip install "nexaai[onnx]"` in provided commands.
 > 2. If you want to <strong>run benchmark evaluation</strong>, just replace `pip install nexaai` with `pip install "nexaai[eval]"` in provided commands.
-> 3. If you want to <strong>convert and quantize huggingface models to GGUF models</strong>, just replace `pip install nexaai` with `pip install "nexaai[nexa-gguf]"` in provided commands.
+> 3. If you want to <strong>convert and quantize huggingface models to GGUF models</strong>, just replace `pip install nexaai` with `pip install "nexaai[convert]"` in provided commands.
 > 4. For Chinese developers, we recommend you to use <strong>Tsinghua Open Source Mirror</strong> as extra index url, just replace `--extra-index-url https://pypi.org/simple` with `--extra-index-url https://pypi.tuna.tsinghua.edu.cn/simple` in provided commands.
 
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