Make sure people wait for the extensions to be available

Author: gsmet

documentation/modules/ROOT/pages/06_dev-services.adoc

@@ -57,7 +57,6 @@ quarkus extension remove quarkus-jdbc-h2
 --
 ====
 
-
 Notice in the logs how Quarkus has reloaded and started up a PostgreSQL database Dev Service:
 
 [.console-output]

documentation/modules/ROOT/pages/07_spring.adoc

@@ -49,6 +49,8 @@ quarkus ext add spring-web spring-data-jpa
 [INFO] ------------------------------------------------------------------------
 ----
 
+Notice in the logs how Quarkus is reloading and the Spring compatibility extensions are now part of the `Installed features`.
+
 == Create a Spring Data Repository for Fruit
 
 Spring Data is one of the most popular Spring APIs, so let's create a Spring Data JPA Repository for our `Fruit` entity. Create the `SpringFruitRepository` Java class in `src/main/java` in the `com.redhat.developers` package with the following contents:

documentation/modules/ROOT/pages/08_rest-client.adoc

@@ -72,6 +72,8 @@ quarkus extension add rest-client-jackson
 [INFO] ------------------------------------------------------------------------
 ----
 
+Notice in the logs how Quarkus is reloading and the `rest-client-jackson` extension is now part of the `Installed features`.
+
 == Create FruityVice POJO
 
 We need to create a POJO object that is used to unmarshal a JSON message from http://fruityvice.com[window=_blank].