update help text for --example-react-native-version

lib/cli-command.js

@@ -142,7 +142,7 @@ ${postCreateInstructions(createOptions)}`);
     default: 'example',
   }, {
     command: '--example-react-native-version [exampleReactNativeVersion]',
-    description: 'React Native version for the generated example project',
+    description: 'React Native template version for the generated example project, for example: react-native-tvos, [email protected] (requires --tvos-enabled option); [email protected]',
     default: 'react-native@latest',
   }, {
     command: '--write-example-podfile',