* fix: delete redundant quick examples. * feat: add How-to Guides with use cases. * fix: _toc.yml * fix: fix typo. * fix: fix typo and file location. * fix: add quickstarts to _toc.yml  | 
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| .. | ||
| index.md | ||
| orca-keras-quickstart.md | ||
| orca-pytorch-distributed-quickstart.md | ||
| orca-pytorch-quickstart.md | ||
| orca-tf-quickstart.md | ||
| orca-tf2keras-quickstart.md | ||
| ray-quickstart.md | ||