There are two different options for adding a direct link to your course wiki inside of myCourses. First you'll need to determine which option suits your needs, and then follow the appropriate directions to add the navbar link into your myCourses shell.
(for individual courses running during a specific quarter)
Review Customize the Navigation Bar for instructions on customizing the myCourses nav bar. In the step where you add and remove links, choose the standard Wiki item from the list.
(for courses with multiple sections, or those running across several different quarters)
Review Customize the Navigation Bar for instructions on customizing the myCourses nav bar. Instead of adding items from the standard list, you will create a new link by clicking Create Custom Link.
Note that students may need to log into Confluence after clicking these links in order to view the course wiki.