Add mention of Google Colab option

Seems like the Google Colab option was added, then not mentioned as an option on this page. I found logging in with a Microsoft account extremely finicky, whereas Google Colab requires no account or login, so I recommend listing Google Colab as an option.

Author: bertiewooster

beginner_source/basics/intro.py

@@ -34,7 +34,7 @@
 ------------------
 You can run this tutorial in a couple of ways:
 
-- **In the cloud**: This is the easiest way to get started! Each section has a "Run in Microsoft Learn" link at the top, which opens an integrated notebook in Microsoft Learn with the code in a fully-hosted environment.
+- **In the cloud**: This is the easiest way to get started! Each section has a "Run in Microsoft Learn" and "Run in Google Colab" link at the top, which opens an integrated notebook in Microsoft Learn (Microsoft account required) or Google Colab (no account required), respectively, with the code in a fully-hosted environment.
 - **Locally**: This option requires you to setup PyTorch and TorchVision first on your local machine (`installation instructions <https://pytorch.org/get-started/locally/>`_). Download the notebook or copy the code into your favorite IDE.