Run eslint --fix

Summary:
CI is currently failing because of a lint issue, this fixes it and a bunch of other warnings that are auto-fixable.

**Test plan**
Quick manual test, cosmetic changes only.
Closes https://github.com/facebook/react-native/pull/16229

Differential Revision: D6009748

Pulled By: TheSavior

fbshipit-source-id: cabd44fed99dd90bd0b35626492719c139c89f34

local-cli/templates/HelloNavigation/components/ListItem.js

@@ -28,7 +28,7 @@ const Touchable = ({onPress, children}) => {
       </TouchableHighlight>
     );
   }
-}
+};
 
 const ListItem = ({label, onPress}) => (
   <Touchable onPress={onPress}>

local-cli/templates/HelloNavigation/views/chat/ChatScreen.js

@@ -84,7 +84,7 @@ export default class ChatScreen extends Component {
         messages: messages,
         dataSource: prevState.dataSource.cloneWithRows(messages),
         myMessage: '',
-      }
+      };
     });
     this.textInput.clear();
   }