grammar fix (#364)

deleted an extra 'the'

Co-authored-by: Keith Battocchi <[email protected]>

Author: jaronowitz

Diff for: notebooks/CustomerScenarios/Case Study - Customer Segmentation at An Online Media Company.ipynb

@@ -613,7 +613,7 @@
     "# Understand Treatment Effects with EconML <a id=\"interpret\"></a>\n",
     "EconML includes interpretability tools to better understand treatment effects. Treatment effects can be complex, but oftentimes we are interested in simple rules that can differentiate between users who respond positively, users who remain neutral and users who respond negatively to the proposed changes.\n",
     "\n",
-    "The EconML `SingleTreeCateInterpreter` provides interperetability by training a single decision tree on the treatment effects outputted by the any of the EconML estimators. In the figure below we can see in dark red users respond strongly to the discount and the in white users respond lightly to the discount."
+    "The EconML `SingleTreeCateInterpreter` provides interperetability by training a single decision tree on the treatment effects outputted by any of the EconML estimators. In the figure below we can see in dark red users respond strongly to the discount and the in white users respond lightly to the discount."
    ]
   },
   {