Merge pull request #731 from emmanuel-keller/master

Doc update
Merge pull request #732 from emmanuel-keller/master

Add v1 API
Merge pull request #733 from emmanuel-keller/master

Fix link issue
Merge pull request #734 from emmanuel-keller/master

Improvement
Update README.md

Various language fixes
Update authentication.md

Language fixes.
Update building_opensearchserver.md

Language fixes.
Update action.md

Language fixes.
Update database.md

Language fixes.
Update delete.md

Language fixes.
Update file_crawler.md

Language fixes.
Update index.md

Language fixes, removed an odd cut/paste mistake.
Update monitor.md

Language fixes.
Update optimize.md

Language fixes.
Update pattern.md

Language fixes.
Update renderer.md

Language fixes.
Update schema.md

Language fixes.
Update screenshot.md

Language fixes.
Update search.md

Language fixes.
Update search_template.md

Language fixes.