Fix outdated log settings in doc (#102285) (#102286)
Replace torch._dynamo.config.loglevel=<level> with torch._logging.set_logs(dynamo=<level>)
Fixes #ISSUE_NUMBER
Pull Request resolved: https://github.com/pytorch/pytorch/pull/102286
Approved by: https://github.com/msaroufim, https://github.com/Neilblaze
