docs: format section comments nicely

Proj2.hs

@@ -52,7 +52,7 @@ import Data.List
 import Data.Set qualified as S
 import Debug.Trace
 
--- datatypes --
+-- ==== DATA STRUCTURES =======================================================
 
 type GameState = [[Pitch]]
 
@@ -75,10 +75,7 @@ instance Show Octave where
 
 instance Show Pitch where
   show (Pitch note octave) = show note ++ show octave
-
---
-
--- required functions --
+-- ==== REQUIRED FUNCTIONS ====================================================
 
 toPitch :: String -> Maybe Pitch
 toPitch [note, octave] = Pitch <$> charToNote note <*> charToOctave octave
@@ -136,9 +133,8 @@ initialGuess = (chord, chords)
 nextGuess :: ([Pitch], GameState) -> (Int, Int, Int) -> ([Pitch], GameState)
 nextGuess (prevGuess, chord : chords) _ = (chord, chords)
 
---
+-- ==== HELPER FUNCTIONS ======================================================
 
--- helper functions --
 
 allChords :: [[Pitch]]
 allChords =
@@ -170,5 +166,3 @@ matches xs ys = maximum permutationMatches
   where
     permutationMatches = map (pairwiseMatches xs) (permutations ys)
     pairwiseMatches xs ys = length $ filter (uncurry (==)) $ zip xs ys
-
---