Clarify what "retry" means here

Reported by kibi, in passing, on #17597.

wiki/src/contribute/release_process/test/setup.mdwn

@@ -142,7 +142,7 @@ If you have AppArmor enabled:
 * You need to add the `/tmp/TailsToaster/** rwk,` line
   to `/etc/apparmor.d/libvirt/TEMPLATE.qemu`, in the
   `profile LIBVIRT_TEMPLATE` section; then delete
-  `/etc/apparmor.d/libvirt/libvirt-*` and retry.
+  `/etc/apparmor.d/libvirt/libvirt-*` and restart the test suite.
   On Debian Stretch, if you use a custom `TMPDIR` to run the test suite,
   replace `/tmp/TailsToaster` with the value of that `$TMPDIR`.