Update build_the_application macros to link in gs-convert-jar-to-war

README.md

@@ -277,6 +277,8 @@ Now run the following to produce a single executable JAR file containing all nec
 
 [maven-shade-plugin]: https://maven.apache.org/plugins/maven-shade-plugin
 
+> **Note:** The procedure above will create a runnable JAR. You can also opt to [build a classic WAR file](/guides/gs/gs-convert-jar-to-war) instead.
+
 Run the service
 -------------------
 Run your service with `java -jar` at the command line: