Language edit

Author: KateFinegan

power-bi-python/README.md

@@ -1,6 +1,6 @@
 # Microsoft Power BI and Python: Two Superpowers Combined
 
-These are supplementing materials for the Real Python [tutorial](https://realpython.com/power-bi-python/) on using Python in Microsoft Power BI Desktop, which include:
+These are supplemental materials for the Real Python [tutorial](https://realpython.com/power-bi-python/) on using Python in Microsoft Power BI Desktop. They include:
 
 - SQLite database with a single `sales` table (fake used car sales dataset)
 - Python scripts used in the tutorial