Adds information on how to enable course metadata. This is helpful for those who are trying to add course metadata but can't figure out where the `Other Course Settings` field is in Advanced Settings.
Possible roles follow. The PR submitter checks the boxes after each reviewer finishes and gives :+1:.
[ ] @bradenmacdonald
[ ] Ran ./run_tests.sh without warnings or errors
> There were warnings; however, the changes done did not increase the number of warnings. The warnings present are already present in the `master` branch.
[ ] Add a comment with the description of this change or link this PR to the next release notes task.
[ ] Squash commits