Update coursepages/intro-cs/README.md

Co-authored-by: Lenox Waciuma Wanjohi <waciumawanjohi@users.noreply.github.com>

Author: pulkitkrishna00

coursepages/intro-cs/README.md

@@ -1,6 +1,6 @@
 # Introduction to Computer Science and Programming using Python
 
-This course will introduce you to the world of computer science an programming. This course gives you a flavor of the material to come. If you finish the course wanting more, Computer Science is likely for you!
+This course will introduce you to the world of computer science and programming, giving you a flavor of the material to come. If you finish the course wanting more, Computer Science is likely for you!
 
 This course has been developed by MIT and is available on [MIT's OCW](https://ocw.mit.ed) platform.