movieDetails_tutorial_update: redacted dataset (#124)

Author: steveren

source/tutorial/movie-details/prereqs-and-import-data.txt

@@ -31,7 +31,7 @@ To download the documents, right-click on the URL and select
 into the ``test.movieDetails`` collection of your Atlas cluster in the
 following step.
 
-The ``movieDetails.json`` file is 1.4 MB and contains records for 2295
+The ``movieDetails.json`` file is 1.4 MB and contains records for 2250
 movies. The following is a sample document from the dataset:
 
 .. code-block:: json