updated docs for #802, #783
updated docs for #802, #783

yinjimmy/en,sdkbox-doc/en,soomla/en,sdkbox-doc/en,soomla/en,sdkbox-staging/en,sdkbox-staging/en,yinjimmy/en,soomla/en,yinjimmy/en,sdkbox-staging/en,soomla/en,sdkbox-doc/en,sdkbox-doc/en,sdkbox-staging/en,yinjimmy/en