install documentation has one too many directories

[numericillustration]

https://github.com/TritonDataCenter/manta-thoth#thoth-and-triton states to download the installer from

 curl -k \
  https://us-east.manta.joyent.com/thoth/public/thoth/thoth-sunos-latest.tar.gz

but the tar ball is not at that location

~ 🂁 mls -l /thoth/public/thoth/
-rwxr-xr-x 1 thoth         86479 Dec 18  2020 thoth

but is in fact 1 directory lower

~ 🂁 mls -l /thoth/public/
drwxr-xr-x 1 thoth             0 Dec 18  2020 assets
drwxr-xr-x 1 thoth             0 Dec 18  2020 lib
-rwxr-xr-x 1 thoth         22092 Dec 18  2020 sdc-thoth
-rwxr-xr-x 1 thoth          6957 Dec 18  2020 sdc-thoth-install
-rwxr-xr-x 1 thoth          1119 Dec 18  2020 sdc-thoth-propagate
-rwxr-xr-x 1 thoth          1840 Dec 18  2020 sdc-thoth-update
-rwxr-xr-x 1 thoth          2091 Dec 18  2020 sdc-thoth-update-all
-rwxr-xr-x 1 thoth         86479 Dec 18  2020 thoth
-rwxr-xr-x 1 thoth      10098936 Dec 18  2020 thoth-darwin-1.1.0-78003c4.tar.gz
-rwxr-xr-x 1 thoth      10098936 Dec 18  2020 thoth-darwin-latest.tar.gz
drwxr-xr-x 1 thoth             0 Dec 18  2020 thoth-pre-2015-04-29-17:38
-rwxr-xr-x 1 thoth      13303457 Dec 18  2020 thoth-sunos-1.1.0-c5b9bc9.tar.gz
-rwxr-xr-x 1 thoth      13311193 Dec 18  2020 thoth-sunos-1.1.0.tar.gz
-rwxr-xr-x 1 thoth      14001700 Dec 18  2020 thoth-sunos-1.2.1-209a3d6.tar.gz
-rwxr-xr-x 1 thoth      46551866 Dec 18  2020 thoth-sunos-1.2.1.tar.gz
-rwxr-xr-x 1 thoth      25664890 Dec 18  2020 thoth-sunos-1.3.0.tar.gz
-rwxr-xr-x 1 thoth      25661904 Dec 18  2020 thoth-sunos-1.3.1.tar.gz
-rwxr-xr-x 1 thoth      25661904 Dec 18  2020 thoth-sunos-latest.tar.gz
-rwxr-xr-x 1 thoth      12574340 Dec 18  2020 thoth.tar.gz
-rwxr-xr-x 1 thoth      12571994 Dec 18  2020 thoth.tar.gz-2016-12-21:00:06:09
-rwxr-xr-x 1 thoth      12555972 Dec 18  2020 thoth.tar.gz-2016-12-21:00:12:51
-rwxr-xr-x 1 thoth      12154393 Dec 18  2020 thoth.tar.gz.2015-05-15
drwxr-xr-x 1 thoth             0 Dec 18  2020 tickets
~ 🂁