fix url post pt-2.0 release

[stas00]

change: https://pytorch.org/docs/2.0/generated/torch.compile.html?highlight=torch+compile#torch.compile to: https://pytorch.org/docs/stable/generated/torch.compile.html?highlight=torch+compile#torch.compile once the latter doc appears post pt-2.0 release

for the trainer code here: https://github.com/huggingface/transformers/pull/22140

Actually it looks like all the good stuff is at https://pytorch.org/docs/master/dynamo/index.html - but again be wary of /master