Document exceptions
📚 Documentation
This is only a suggestion, but I find it useful to have what exceptions functions/classes can raise in the docs, so I'd like to suggest adding the Raises: section to public functions/classes.
Progress
dirname $(grep -rl "raise " pytorch_lightning)|sort|uniq|awk '{print "- [ ] "$1}'

 pytorch_lightning/accelerators (#9558)
 pytorch_lightning/callbacks
 pytorch_lightning/callbacks/progress
 pytorch_lightning/core
 pytorch_lightning/core/mixins
 pytorch_lightning/loggers
 pytorch_lightning/loops
 pytorch_lightning/loops/dataloader
 pytorch_lightning/loops/epoch
 pytorch_lightning/loops/optimization
 pytorch_lightning/overrides
 pytorch_lightning/plugins
 pytorch_lightning/plugins/environments
 pytorch_lightning/plugins/io
 pytorch_lightning/plugins/precision
 pytorch_lightning/plugins/training_type
 pytorch_lightning/profiler
 pytorch_lightning/trainer
 pytorch_lightning/trainer/connectors
 pytorch_lightning/trainer/connectors/logger_connector
 pytorch_lightning/tuner
 pytorch_lightning/utilities