Fix some formatting in README

Author: seanchen1991

README.md

@@ -39,7 +39,8 @@ For the algorithms portion of the sprint challenge, you'll be answering question
 
 ## Rubric
 
-Each test in the Data Structures portion is worth 2 points. Each runtime analysis question in the Data Structures portion is worth 1 point. 
+Each test in the Data Structures portion is worth 2 points.  
+Each runtime analysis question in the Data Structures portion is worth 1 point.  
 Each question in the Algorithms portion is worth 2 points. 
 
 In order to earn a score of 3, you'll need to score at least 90%, or 18 / 20 total possible points.