Fix minor typo in datasets_california_housing.py (#803)

Author: sylvaincom

python_scripts/datasets_california_housing.py

@@ -106,9 +106,9 @@
 # huge difference. It confirms the intuitions that there are a couple of extreme
 # values.
 #
-# Up to know, we discarded the longitude and latitude that carry geographical
-# information. In short, the combination of this feature could help us to decide
-# if there are locations associated with high-valued houses. Indeed, we could
+# Up to now, we discarded the longitude and latitude that carry geographical
+# information. In short, the combination of these features could help us decide
+# if there are locations associated with high-value houses. Indeed, we could
 # make a scatter plot where the x- and y-axis would be the latitude and
 # longitude and the circle size and color would be linked with the house value
 # in the district.