Fixes #6391
Update tutorial-advanced-app.md

Typo fixes
Merge pull request #6423 from shude/patch-1

Update tutorial-advanced-app.md
Deleted double tip [skip ci]
Merge pull request #6428 from nikbas/rbac-cleanup

Deleted double tip [skip ci]
Fix grammatical error
Merge pull request #6429 from PendalF89/patch-1

[skip ci] Fix grammatical error
docs/guide-ja/README.md - updated [ci skip]
docs/guide-ja/db-migrations.md - started translation [ci skip]
docs/guide-ja/db-migrations.md - completed [ci skip]
Merge pull request #6433 from softark/docs-guide-ja-db-migrations

/docs/guide-ja/db-migrations.md added [ci skip]