fixing file links in README

Author: dalvescb

README.md

@@ -4,6 +4,6 @@ Haskell exercises corresponding to the youtube video series [Learning Haskell](h
 # Instructions
 * It's recommended to install Haskell with VS Code as seen in the [intro video](https://www.youtube.com/watch?v=vn1IOxVplKQ&list=PLHRF-X-NtQR4MZBvm05NshPIEI8ELID5m&index=1)
 * Each project folder contains a file with exercises to be completed
-  (i.e. [HaskellExercises01/src/Exercises01.hs](file://HaskellExercises01/src/Exercises01.hs),  [HaskellExercises02/src/Exercises02.hs](file://HaskellExercises02/src/Exercises02.hs)
+  (i.e. [HaskellExercises01/src/Exercises01.hs](HaskellExercises01/src/Exercises01.hs), [HaskellExercises02/src/Exercises02.hs](HaskellExercises02/src/Exercises02.hs) )
 * Replace each function whose current implementation is `error "TODO: ..."` with an actual implementation
 * Run `stack test` from the project root to run testing scripts and check your answers