Add google collab link for gallery examples (#7843)

.github/workflows/docs.yml

@@ -56,6 +56,13 @@ jobs:
         sed -i -e 's/-j auto/-j 1/' Makefile
         make html
 
+        mkdir build/html/_generated_ipynb_notebooks
+        for file in `find build/html/_downloads`; do
+          if [[ $file == *.ipynb ]]; then
+            cp $file build/html/_generated_ipynb_notebooks/
+          fi
+        done
+        
         cp -r build/html "${RUNNER_ARTIFACT_DIR}"
         
         # On PRs we also want to upload the docs into our S3 bucket for preview.

gallery/plot_datapoints.py

@@ -3,6 +3,8 @@
 Datapoints FAQ
 ==============
 
+https://colab.research.google.com/github/pytorch/vision/blob/gh-pages/_generated_ipynb_notebooks/plot_datapoints.ipynb
+
 Datapoints are Tensor subclasses introduced together with
 ``torchvision.transforms.v2``. This example showcases what these datapoints are
 and how they behave.