Correct the step names.

Author: eamonnsullivan

.circleci/config.yml

@@ -45,14 +45,14 @@ commands:
       - run:
           name: Zip up jar file
           command: zip --junk-paths github-api-lib github-api-lib.jar
-      - persist-to-workspace:
+      - persist_to_workspace:
           root: ~/repo
           paths:
             - github-api-lib.zip
 
   create-release:
     steps:
-      - attach-workspace:
+      - attach_workspace:
           at: ~/repos
       - run:
           name: install mvn