Some minor changes based on feedback

samples/standalone/kotlin/http-client/README.adoc

@@ -2,7 +2,7 @@
 
 == Prerequisites
 
-First you have to publish to Maven Local the stubs of the *http-server* module
+First, you have to publish to Maven Local the stubs of the *http-server* module.
 
 == How to run it?
 

samples/standalone/kotlin/http-server/src/main/kotlin/com/example/fraud/TestController.kt

@@ -52,7 +52,7 @@ class TestController {
 		if (!Arrays.equals(this.request, requestBody)) {
 			throw IllegalStateException("Invalid request body");
 		}
-		return this.response;
+		return response;
 	}
 
 }