Fix submission doc file index

week1/01-example.md

@@ -213,4 +213,4 @@ Inside this file, you can type any line of code you would type in the REPL. To r
 
 ## Part 5: Submitting your Solution
 
-[Click here to learn how to submit your assignment.](00-grading-and-submission.md)
+[Click here to learn how to submit your assignment.](02-grading-and-submission.md)