fix keyboard demo
add log doc
Update en_nav_extended.md
Update en_nav_extended.md
Update en_nav_extended.md
Create en_input.md
Update en_input.md
Update en_input.md
Update en_input.md
Update en_input.md
Create en_log.md
Update en_log.md
Create en_keyboard.md
Create en_voice.md
Update en_voice.md
Update en_voice.md
Update en_voice.md
Update en_voice.md
Update en_voice.md
Update ru_voice.md