Fix broken links in README (#18017)

* fix readme links

* fix

* x

(cherry picked from commit ed86a02)

Author: awaelchli

README.md

@@ -12,7 +12,7 @@
 ______________________________________________________________________
 
 <p align="center">
-  <a href="https://www.lightning.ai/">Lightning.ai</a> •
+  <a href="https://lightning.ai/">Lightning.ai</a> •
   <a href="https://lightning.ai/docs/pytorch/stable/">PyTorch Lightning</a> •
   <a href="https://lightning.ai/docs/fabric/stable/">Fabric</a> •
   <a href="https://lightning.ai/docs/app/stable/">Lightning Apps</a> •

src/lightning_app/README.md

@@ -16,7 +16,7 @@ ______________________________________________________________________
 
 [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/lightning_app)](https://pypi.org/project/lightning_app/)
 [![PyPI Status](https://badge.fury.io/py/lightning_app.svg)](https://badge.fury.io/py/lightning_app)
-[![PyPI Status](https://pepy.tech/badge/lightning_app)](https://pepy.tech/project/lightning_app)
+[![PyPI Status](https://pepy.tech/badge/lightning-app)](https://pepy.tech/project/lightning-app)
 [![Conda](https://img.shields.io/conda/v/conda-forge/lightning_app?label=conda&color=success)](https://anaconda.org/conda-forge/lightning_app)
 
 ![readme-gif](https://pl-bolts-doc-images.s3.us-east-2.amazonaws.com/lightning-gif-888777nslpiijdbcvctyvwhe.gif)

src/lightning_fabric/README.md

@@ -17,7 +17,7 @@ ______________________________________________________________________
 
 [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/lightning_fabric)](https://pypi.org/project/lightning_fabric/)
 [![PyPI Status](https://badge.fury.io/py/lightning_fabric.svg)](https://badge.fury.io/py/lightning_fabric)
-[![PyPI Status](https://pepy.tech/badge/lightning_fabric)](https://pepy.tech/project/lightning_fabric)
+[![PyPI Status](https://pepy.tech/badge/lightning-fabric)](https://pepy.tech/project/lightning-fabric)
 [![Conda](https://img.shields.io/conda/v/conda-forge/lightning_fabric?label=conda&color=success)](https://anaconda.org/conda-forge/lightning_fabric)
 
 </div>