Update 2_2_Read_Data.ipynb

Updated scikit url

ml1/2_2_Read_Data.ipynb

@@ -36,7 +36,7 @@
    "source": [
     "The goal of this notebook is to learn how to read and load a sample dataset.\n",
     "\n",
-    "Scikit-learn comes with some bundled [datasets](http://scikit-learn.org/stable/datasets/): iris, digits, boston, etc.\n",
+    "Scikit-learn comes with some bundled [datasets](https://scikit-learn.org/stable/datasets.html): iris, digits, boston, etc.\n",
     "\n",
     "In this notebook we are going to use the Iris dataset."
    ]