fix_docs_typo_mistakes rollback wrong nginz -> nginx fix, replace example of wrong program name from 'nginz' to 'nonexistent'
fix_docs_typo_mistakes rollback wrong nginz -> nginx fix, replace example of wrong program name from 'nginz' to 'nonexistent'

kobel169/dapp,flant/dapp,flant/dapp,kobel169/dapp,kobel169/dapp,flant/dapp,kobel169/dapp