[BUGFIX] Fix batch parameters to specify year and month rather than m…

…onth twice (#17)

demos/03-sql_month_and_year.ipynb

@@ -132,7 +132,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "results = validation_definition.run(batch_parameters={\"month\": 2020, \"month\": 5})\n",
+    "results = validation_definition.run(batch_parameters={\"year\": 2020, \"month\": 5})\n",
     "print(results.describe())"
    ]
   }