Update eslint (#5752)

* Updating eslint

* Updating eslint-plugin-react

webapp/components/channel_header.jsx

@@ -683,10 +683,10 @@ export default class ChannelHeader extends React.Component {
                         id='channelHeader.removeFromFavorites'
                         defaultMessage='Remove from Favorites'
                     /> :
-                        <FormattedMessage
-                            id='channelHeader.addToFavorites'
-                            defaultMessage='Add to Favorites'
-                        />}
+                    <FormattedMessage
+                        id='channelHeader.addToFavorites'
+                        defaultMessage='Add to Favorites'
+                    />}
             </Tooltip>
         );
         const toggleFavorite = (