doc(i18n): translate some extra stuff

[peter-jerry-ye]

Translate author & modify environment for easier use.

[peter-jerry-ye-code-review]

‼️ This code review is generated by a bot. Please verify the content before trusting it.

Here are three observations and potential issues from the provided git diff:

1. Environment Variable Change (SPHINXOPTS to LANGUAGE):

   • The environment variable SPHINXOPTS has been replaced with LANGUAGE in both the document.code-workspace and next/README.md files. This change might cause issues if the build system or scripts still expect SPHINXOPTS to be set. Ensure that all dependent scripts and configurations are updated to use LANGUAGE instead of SPHINXOPTS.

2. Inconsistent Language Variable Handling:

   • In next/conf.py, the code checks for both READTHEDOCS_LANGUAGE and LANGUAGE environment variables. However, the format of the language code differs (zh-cn vs. zh_CN). This inconsistency could lead to unexpected behavior. Ensure that the language codes are consistent across the codebase to avoid confusion.

3. Hardcoded Project and Author Names:

   • The project name and author are hardcoded differently for Chinese and English versions in next/conf.py. While this might be intentional, it could lead to maintenance challenges if the project name or author changes. Consider using a more dynamic approach or configuration files to manage these values, especially if they are subject to frequent changes.

These issues should be reviewed and addressed to ensure consistency and maintainability in the codebase.