Update tutorials/2021_microgames.md

Co-authored-by: Peter Law <[email protected]>

Author: Adimote

tutorials/2021_microgames.md

@@ -6,7 +6,7 @@ title: 2021 Microgames
 2021 Microgames
 ===============
 
-Welcome to Student Robotics 2021
+Welcome to Student Robotics 2021!
 
 Here is a link to the [SR2021 Microgames](https://docs.google.com/document/d/1pKYGQo6m1OjOMAJ4-IqPvfbQ71G60QBVo27lDeKToUY/edit)