Improve feature provider option descriptions

At this point the [descriptions of the plugin options](https://github.com/lgeiger/ide-python/blob/master/package.json#L67-L350) visible in the Atom settings are rather basic and often less accurate than what can be found in the documentation of the specific feature provider.

We should improve those descriptions and/or link to the relevant docs if applicable.

Any help on this is highly appreciated. This issue doesn't need to be fixed in one go, we can iteratively improve the plugin documentation.

从 package.json 中的插件选项描述开始，尤其是第 67-350 行，并将每个条目与其特定功能提供者的文档进行比较。如果描述不准确或过于基础，请更新描述或添加相关文档链接。对于已审查的选项，如果 Atom 设置描述更加清晰准确，则视为完成。

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