Bael 4700 (#10231)

* Added code examples from the article.

* Hide the revoked token

* Reduce long line break indentation to 2 spaces, change "your" to "our," and use the -LiveTest convention for the test class.

* Reduce Java version from 11 to 1.8 and add the new discord4j module to the root pom.

* Remove test due to context failing to start up without a valid bot token.

* Replace test class and add error handling for invalid tokens.

pom.xml

@@ -397,6 +397,7 @@
                 <module>ddd</module>
                 <!-- <module>ddd-modules</module>--> <!-- we haven't upgraded to Java 9 -->
                 <module>deeplearning4j</module>
+                <module>discord4j</module>
                 <module>disruptor</module>
                 <module>dozer</module>
                 <module>drools</module>
@@ -909,6 +910,7 @@
                 <module>ddd</module>
                 <!-- <module>ddd-modules</module>--> <!-- we haven't upgraded to Java 9 -->
                 <module>deeplearning4j</module>
+                <module>discord4j</module>
                 <module>disruptor</module>
                 <module>dozer</module>
                 <module>drools</module>