docs/guide-ja/input-multiple-models.md - prepared for translation [ci skip]
docs/guide-ja - stubs added [ci skip]
docs/guide-ja/security-authentication.md - started translation [ci skip]
docs/guide-ja/security-authentication.md - added [ci skip]
docs/guide-ja/README.md - updated [ci skip]
Merge pull request #6606 from softark/docs-guide-ja-security-authentication

Docs guide ja security authentication