fix(Accordion): typings inverted to boolean (#1758)
fix(Accordion): typings inverted to boolean (#1758)

Tiny fix for typings, inverted type incorrectly set to string.
aabustamante/Semantic-UI-React,Semantic-Org/Semantic-UI-React,Semantic-Org/Semantic-UI-React,aabustamante/Semantic-UI-React,aabustamante/Semantic-UI-React