update the URL to fetch data from UCI repo

Author: aloklal99

notebooks/.Crosstab_Explained.ipynb.swp

@@ -264,7 +264,7 @@
    ],
    "source": [
     "# Read in the CSV file and convert \"?\" to NaN\n",
-    "df_raw = pd.read_csv(\"http://mlr.cs.umass.edu/ml/machine-learning-databases/autos/imports-85.data\",\n",
+    "df_raw = pd.read_csv(\"http://archive.ics.uci.edu/ml/machine-learning-databases/autos/imports-85.data\",\n",
     "                  header=None, names=headers, na_values=\"?\" )\n",
     "df_raw.head()"
    ]