docs: update destroy

docs/chapters/subcommands/destroy.rst

@@ -3,6 +3,9 @@ destroy
 
 Destroy jails or releases.
 
+Bastille will normally ask if you are sure you want to delete targeted jail(s).
+Use the ``-y|--yes`` option to bypass this prompt.
+
 .. code-block:: shell
 
   ishmael ~ # bastille destroy -a folsom
@@ -24,4 +27,5 @@ option will retain the release cache (*.txz file), if you choose to keep it.
     -a | --auto              Auto mode. Start/stop jail(s) if required.
     -c | --no-cache          Do no destroy cache when destroying a release.
     -f | --force             Force unmount any mounted datasets when destroying a jail or release (ZFS only).
+    -y | --yes               Do no prompt. Just destroy.
     -x | --debug             Enable debug mode.