Docs wrong callback reference
📚 Documentation
Fixed wrong on_fit_start callback reference in documentation.
PR: #7001
Currently:

on_fit_start
^^^^^^^^^^^^
.. automethod:: pytorch_lightning.callbacks.Callback.on_save_checkpoint
:noindex:

Fix:

on_fit_start
^^^^^^^^^^^^
.. automethod:: pytorch_lightning.callbacks.Callback.on_fit_start
:noindex: