ci: don't JAR javadoc (#3493)

Creating javadoc is sufficient to make sure the docs are free of errors.
JARing it just wastes time.

Author: pongad

.circleci/config.yml

@@ -230,7 +230,7 @@ jobs:
           <<: *anchor_build
       - run:
           name: Run mvn javadoc goal
-          command: mvn javadoc:jar javadoc:test-jar
+          command: mvn javadoc:javadoc javadoc:test-javadoc
 
 workflows:
   version: 2