Update the Google collab link.

notebooks/search/08-learning-to-rank.ipynb

@@ -10,7 +10,7 @@
     "\n",
     "TODO: udpate the link to elastic/elasticsearch-labs instead of my fork before merging.\n",
     "\n",
-    "[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/afoucret/elasticsearch-labs/blob/ltr-notebook/notebooks/learning-to-rank/01-learning-to-rank.ipynb)\n",
+    "[![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/afoucret/elasticsearch-labs/blob/ltr-notebook/notebooks/search/08-learning-to-rank.ipynb)\n",
     "\n",
     "In this notebook we will see an example on how to train a Learning To Rank model using [XGBoost](https://xgboost.ai/) and how to deploy it to be used as a rescorer in Elasticsearch.\n",
     "\n",