no-jira missing comment block on similar terms example (#146)

Author: iredpath

examples/src/main/java/com/basistech/rosette/examples/SimilarTermsExample.java

@@ -25,6 +25,9 @@
 
 import java.io.IOException;
 
+/**
+ * Example which demonstrates the similar terms api
+ */
 public final class SimilarTermsExample extends ExampleBase {
     public static void main(String[] args) {
         try {