Redirect "Finetuning Torchvision Models" to "TorchVision Object Detection Finetuning Tutorial" (#2378)

Author: tcNickolas

Diff for: beginner_source/finetuning_torchvision_models_tutorial.rst

@@ -0,0 +1,10 @@
+Finetuning Torchvision Models
+=============================
+
+This tutorial has been moved to https://pytorch.org/tutorials/intermediate/torchvision_tutorial.html
+
+It will redirect in 3 seconds.
+
+.. raw:: html
+
+   <meta http-equiv="Refresh" content="3; url='https://pytorch.org/tutorials/intermediate/torchvision_tutorial.html'" />