* Remove machine_translated
* Add 'For non-Linux operating systems and for AArch64 CPU' section
* Translate getting-started/install.md to ja
* Fix index.md anchors
* Translate index.md via GitLocalize
* Translate index.md via GitLocalize
* Translate getting-started/playground.md to ja
* Translate getting-started/index.md to ja
* Translate experiment to 試す in ja
* Translate getting-started/tutoial.md to ja
* Translate getting-started/tutoial.md to ja
* Translate getting-started/example-datasets to ja
* Fix original article path
* Fix getting-started/index.md
* Revert ja/index.md
* Fix Input/Output to 入出力
* Fix Original argicle en
* Fix missing links md files.
`getting-started/sql-reference/statements/optimize.md` is not placed in ja directory.
Currentry, it refer to english one.
* Change link to optimize.md copied from en
* Change link to alter.md ja
