fixed a typo
fixed a typo

stephenc/redmine-java-api,sleroy/redmine-java-api,Wurmy/My_Redmine-Java-API_XML,redminenb/redmine-java-api,sleroy/redmine-java-api,taskadapter/redmine-java-api,redminenb/redmine-java-api,taskadapter/redmine-java-api