fixing isort

Signed-off-by: Nathaniel <NathanielF@users.noreply.github.com>

Author: NathanielF

docs/source/notebooks/inv_prop_pymc.ipynb

@@ -11,7 +11,7 @@
     "import numpy as np\n",
     "import pandas as pd\n",
     "\n",
-    "import causalpy as cp\n"
+    "import causalpy as cp"
    ]
   },
   {