minor improvements on sample documentation

Author: nenaraab

samples/sap-java-buildpack-api-usage/README.md

@@ -130,7 +130,7 @@ If not you should get a `403` status code (Forbidden).
 
 > Note: you can find the route of your approuter application using `cf app approuter-sap-java-buildpack-api-usage`.
 
-### Clean-Up
+## Clean-Up
 
 Finally delete your application and your service instances using the following commands:
 ```

samples/spring-security-basic-auth/README.md

@@ -125,7 +125,7 @@ You will get a response like:
 }
 ```
 
-### Clean-Up
+## Clean-Up
 
 Finally delete your application and your service instances using the following commands:
 ```

samples/spring-security-xsuaa-usage/README.md

@@ -56,7 +56,7 @@ After deployment, the AppRouter will trigger authentication automatically when y
 
 * `https://spring-security-xsuaa-usage-web-<ID>.<LANDSCAPE_APPS_DOMAIN>/v1/sayHello` - GET request that provides XSUAA user token details, but only if token matches.
 * `https://spring-security-xsuaa-usage-web-<ID>.<LANDSCAPE_APPS_DOMAIN>/v1/method` - GET request executes a method secured with Spring Global Method Security.
-* `https://spring-security-xsuaa-usage-web-<ID>.<LANDSCAPE_APPS_DOMAIN>/v1/readData` - GET request to read sensitive data via Global Method Security.
+* `https://spring-security-xsuaa-usage-web-<ID>.<LANDSCAPE_APPS_DOMAIN>/v1/getAdminData` - GET request to read sensitive data via Global Method Security. You will get a `403` (UNAUTHORIZED), in case you do not have `Admin` scope.
 * `https://spring-security-xsuaa-usage-web-<ID>.<LANDSCAPE_APPS_DOMAIN>/v2/sayHello` - GET request that logs generic Jwt info, but only if token matches. 
 
 Have a look into the logs with:
@@ -65,3 +65,12 @@ cf logs spring-security-xsuaa-usage --recent
 ``
 
 > Note: https://spring-security-xsuaa-usage-web-<ID>.<LANDSCAPE_APPS_DOMAIN> points to the url of the AppRouter. Get all app routes with `cf apps`.
+
+## Clean-Up
+
+Finally delete your application and your service instances using the following commands:
+```
+cf delete -f spring-security-xsuaa-usage
+cf delete -f approuter-spring-security-xsuaa-usage
+cf delete-service -f xsuaa-authentication
+```

samples/spring-security-xsuaa-usage/src/main/java/sample/spring/xsuaa/TestController.java

@@ -95,7 +95,7 @@ public String callMethodRemotely() {
      *
      * @see {@link DataService}.
      */
-    @GetMapping(value = "/v1/readData")
+    @GetMapping(value = "/v1/getAdminData")
     public String readFromDataService() {
         return dataService.readSensitiveData();
     }