The contextClass attribute of HostConfig refers to the value of the contextClass attribute of Host.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1508756 13f79535-47bb-0310-9956-ffa450edef68
Fix javadoc formatting typo

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1508763 13f79535-47bb-0310-9956-ffa450edef68