Change to ipex-llm

[plusbang]

All files are updated, except the following part which not quite sure whether need to change. Do you have any suggestions? @glorysdj

• https://github.com/intel-analytics/bigdl-llm-tutorial/blob/main/ch_2_Environment_Setup/README.md#2213-windows-subsystem-for-linux-wsl: provide link in bigdl document to demonstrate WSL2 installation

• https://github.com/intel-analytics/bigdl-llm-tutorial/blob/main/ch_8_AppDev_Advanced/8_LangChain_Integrations.ipynb: In '8.4 Question Answering over Docs', we use BigDL document to input and illustrate results.

[glorysdj]

All files are updated, except the following part which not quite sure whether need to change. Do you have any suggestions? @glorysdj

• https://github.com/intel-analytics/bigdl-llm-tutorial/blob/main/ch_2_Environment_Setup/README.md#2213-windows-subsystem-for-linux-wsl: provide link in bigdl document to demonstrate WSL2 installation
• https://github.com/intel-analytics/bigdl-llm-tutorial/blob/main/ch_8_AppDev_Advanced/8_LangChain_Integrations.ipynb: In '8.4 Question Answering over Docs', we use BigDL document to input and illustrate results.

please use bigdl-llm document for WSL install and as the input for now.