diff --git a/crates/border-wars/src/hex.rs b/crates/border-wars/src/hex.rs
index 8026dc1..744329c 100644
--- a/crates/border-wars/src/hex.rs
+++ b/crates/border-wars/src/hex.rs
@@ -4,7 +4,8 @@ use std::collections::HashSet;
 use std::ops;
 
 /// Hexagonal position (in a hexagonal grid).
-/// We are using the axial coordinate system explained in this [documentation](https://www.redblobgames.com/grids/hexagons/#coordinates).
+/// We are using the axial coordinate system explained in this
+/// [documentation](https://www.redblobgames.com/grids/hexagons/#coordinates).
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
 pub struct HexPosition {
     /// Q coordinate
@@ -19,7 +20,8 @@ impl HexPosition {
     ///
     /// # How does it work ?
     ///
-    /// Hexagonal grid using the [cube](https://www.redblobgames.com/grids/hexagons/#coordinates) coordinate system,
+    /// Hexagonal grid using the
+    /// [cube coordinate system](https://www.redblobgames.com/grids/hexagons/#coordinates),
     /// is like a cube in 2D space.
     /// The Manhattan distance between two positions is equal to:  the half of
     /// the sum of abs(dx) + abs(dy) + abs(dz)