Some of our checkers are registered under multiple different check names. This works well in terms of command line arguments, but does not work well for documentation discoverability. This patch adds documentation for the CERT checks that automatically redirects to the canonical documentation for the checker. It also updates the canonical checkers to have a list of aliases under which the check can be enabled.
Currently, the patch does not add the checkers to list.rst, so they are only discoverable by using the checker name directly. This prevents cluttering up the list of checkers by only listing the canonical ones. However, for the sake of discoverability, we may want to include the duplicated checkers. I wasn't certain which direction we wanted to go, so recommendations are welcome here.