PaddlePaddle/docs

AI Summary: This GitHub issue proposes integrating the automated spell-checking tool `typos` into the PaddlePaddle `docs` repository to enhance documentation quality and user experience. The plan involves adding a customized `_typos.toml` configuration, integrating `typos` into pre-commit hooks and CI pipelines, and systematically fixing existing typos across the documentation. This initiative aims to align the docs repository with best practices already established in the main PaddlePaddle project.