chore: Update prettier config (react-native-community#379)

Author: janicduplessis

.prettierrc.js

@@ -1,5 +1,6 @@
-// added for Jest inline snapshots to not use default Prettier config
 module.exports = {
+  singleQuote: true,
+  trailingComma: 'all',
   bracketSpacing: false,
-  trailingComma: "all"
-}
+  jsxBracketSameLine: true,
+};