Clarify

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1456762 13f79535-47bb-0310-9956-ffa450edef68
Correct a typo

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1456766 13f79535-47bb-0310-9956-ffa450edef68