update link

Author: Ray Bell

08_machine_learning.ipynb

@@ -249,7 +249,7 @@
     "c = Client('tcp://my.scheduler.address:8786')\n",
     "```\n",
     "\n",
-    "Details on the many ways to create a cluster can be found [here](http://distributed.readthedocs.io/en/latest/setup.html)."
+    "Details on the many ways to create a cluster can be found [here](https://docs.dask.org/en/latest/setup/single-distributed.html)."
    ]
   },
   {
@@ -471,7 +471,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.3"
+   "version": "3.7.5"
   },
   "nbsphinx": {
    "execute": "never"