ExecutTorch Redirects (#3147)

* Redirecting android_native_app_with_custom_op to ExecuTorch.
* Fixing missing blank line.

Author: AlannaBurke

beginner_source/former_torchies_tutorial.rst

@@ -3,6 +3,7 @@ PyTorch for Former Torch Users
 This tutorial is out of date. Please check out the PyTorch tutorials here: https://pytorch.org/tutorials/
 
 You will be redirected in 3 seconds.
+
 .. raw:: html
 
    <meta http-equiv="Refresh" content="3; url='https://pytorch.org/tutorials/'" />