Jiaming Yuan 97c3a80a34

Add C document to sphinx, fix arrow. (#8300) ...

- Group C API.
- Add C API sphinx doc.
- Consistent use of `OptionalArg` and the parameter name `config`.
- Remove call to deprecated functions in demo.
- Fix some formatting errors.
- Add links to c examples in the document (only visible with doxygen pages)
- Fix arrow.

2022-10-05 09:52:15 +08:00

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xgboost

Add C document to sphinx, fix arrow. (#8300)

2022-10-05 09:52:15 +08:00