Readme Issues

[nuclearGoblin]

There are a few things we should fix in the README:

• the documentation link provided (https://det-lab.github.io/TimeGAN-Static/) gives a 404 error. Not sure if this is because the link has moved or the documentation site hasn't been enabled yet.
• There is mention of an included .sif file for use with Singularity, but I can't find one in the repository, maybe it just needs to be pushed?
• It says that one should use python 3.9 or 3.10, but poetry has apparently been told that 3.11 is also acceptable; one of these should change to be consistent.