Fix typos

day24/src/Day24.hs

@@ -179,8 +179,8 @@ main = do
 
  -- Part 2 explanation:
  --
- -- - Let each hailstone i have position p[i] and velocity v[i], effectively a 3D line
- -- - We're looking for a new line with position p and v, such that for i = 1, ..., n and some t[i]:
+ -- - Let each hailstone i have position p[i] and velocity v[i], i.e. be a 3D line
+ -- - We're looking for a new line with position p and velocity v, such that for i = 1, ..., n and some t[i]:
  --
  -- p + t[i] * v = p[i] + t[i] * v[i] (note that t[i] is the same on both sides due to the time constraint)
  -- <=> p - p[i] = t[i] * (v[i] - v) (i.e. (p - p[i]) and (v[i] - v) are collinear...)