doc: update doc

Author: JasonLSC

docs/FAQ.md

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+## Questions on Environment Setup
+
+**Question**: When running the program, an error occurs during the import statement "from fused_ssim import fused_ssim". The error message is related to libstdcxx.
+
+**Analysis**: This issue occurs because the stdcxx-related dynamic libraries in the Conda environment are outdated. The fused_ssim module was compiled using a higher version of GCC from the local environment rather than the lower version of GCC in the Conda environment. 
+
+**Solution**: You can specify the "conda-forge" channel when creating a new Conda environment to ensure downloading the latest GCC toolchain.
+
+```bash
+conda create --name gscodec_studio -c conda-forge python=3.10
+```
+---