add single quotes

docs/src/main/asciidoc/picocli.adoc

@@ -300,7 +300,7 @@ annotationProcessor 'info.picocli:picocli-codegen'
 In the development mode, i.e. when running `mvn quarkus:dev`, the application is executed and restarted every time the `Space bar` key is pressed. You can also pass arguments to your command line app via the `quarkus.args` system property, e.g. `mvn quarkus:dev -Dquarkus.args='--help'` and `mvn quarkus:dev -Dquarkus.args='-c -w --val 1'`.
 [NOTE]
 ====
-If you're creating a typical Quarkus application (e.g., HTTP-based services) that includes command-line functionality, you'll need to handle the application's lifecycle differently. In the Runnable.run() method of your command, make sure to use `Quarkus.waitForExit()` or `Quarkus.asyncExit()`. This will prevent the application from shutting down prematurely and ensure a proper shutdown process.
+If you're creating a typical Quarkus application (e.g., HTTP-based services) that includes command-line functionality, you'll need to handle the application's lifecycle differently. In the `Runnable.run()` method of your command, make sure to use `Quarkus.waitForExit()` or `Quarkus.asyncExit()`. This will prevent the application from shutting down prematurely and ensure a proper shutdown process.
 ====
 
 == Kubernetes support