Fix self link (google#428)

Author: MarkDaoust

site/en/gemini-api/docs/get-started/python.ipynb

@@ -82,7 +82,7 @@
       "source": [
         "## Prerequisites\n",
         "\n",
-        "You can run this quickstart in [Google Colab](https://colab.research.google.com/github/google/generative-ai-docs/blob/main/site/en/tutorials/python_quickstart.ipynb), which runs this notebook directly in the browser and does not require additional environment configuration.\n",
+        "You can run this quickstart in [Google Colab](https://colab.research.google.com/github/google/generative-ai-docs/blob/main/site/en/gemini-api/docs/get-started/python.ipynb), which runs this notebook directly in the browser and does not require additional environment configuration.\n",
         "\n",
         "Alternatively, to complete this quickstart locally, ensure that your development environment meets the following requirements:\n",
         "\n",