Is the Lightning App deprecated? (Lightning App doc is not found)

[guyleaf]

Bug description

Hi, I cannot find the documentation for Lightning Apps from the main website.

It seems the link is broken. Is it a bug or something?

Thanks

What version are you seeing the problem on?

master

How to reproduce the bug

The link will be redirected to the main docs.

Error messages and logs

# Error messages and logs here please

Environment

Current environment

#- Lightning Component (e.g. Trainer, LightningModule, LightningApp, LightningWork, LightningFlow):
#- PyTorch Lightning Version (e.g., 1.5.0):
#- Lightning App Version (e.g., 0.5.2):
#- PyTorch Version (e.g., 2.0):
#- Python version (e.g., 3.9):
#- OS (e.g., Linux):
#- CUDA/cuDNN version:
#- GPU models and configuration:
#- How you installed Lightning(`conda`, `pip`, source):
#- Running environment of LightningApp (e.g. local, cloud):

More info

No response