Fix font of search text
Fix font of search text

This text should not be bold.

kenma9123/react-native-material-ui,ajaxangular/react-native-material-ui,mobileDevNativeCross/react-native-material-ui,blovato/sca-mobile-components,xotahal/react-native-material-ui,xvonabur/react-native-material-ui