Sprint 1 learning log update

Author: Richiealx

Sprint-1/notes/learning-log.md

@@ -3,9 +3,11 @@
 ## What I learned
 - Started Sprint 1 exercises and set up coursework branch
 - Learned how to extract directory and extension from a file path using lastIndexOf and slice.
+- How Math.random(), Math.floor(), and arithmetic combine to generate a random integer in a range
+
+
+## Errors I hit and what they mean## What I learned
 
-## Errors I hit and what they mean
-- 
 
 ## Docs I used (links)
 -