Update README.md

tutorial/sudoku/README.md

@@ -10,4 +10,4 @@
 There is a [sudoku solver](./solver/Main.hs) executable contained in this tutorial that is meant to work with the verifier.
 
 ### Example Puzzle
-There is an example puzzle which is hard coded in with the solver. Here is the ![initial state](./assets/init.png) of the puzzle, and here is the ![solution](./assets/solved.png).
+There is an example puzzle which is hard coded in with the solver. Here is the [initial state](./assets/init.png) of the puzzle, and here is the [solution](./assets/solved.png).