fix some cargo doc warnings
@@ -12,7 +12,7 @@ use std::fmt;
/// A Morton-encoded `Point2i`. Uses a `u64` to support the full set of `Point3i`s.
///
-/// https://en.wikipedia.org/wiki/Z-order_curve
+/// <https://en.wikipedia.org/wiki/Z-order_curve>
#[derive(Clone, Copy, Eq, Ord, PartialEq, PartialOrd)]
pub struct Morton2(pub u64);
@@ -57,7 +57,7 @@ impl From<Morton2> for Point2i {
/// A Morton-encoded `Point3i`. Uses a `u128` to support the full set of `Point3i`s.
///
-/// https://en.wikipedia.org/wiki/Z-order_curve
+/// <https://en.wikipedia.org/wiki/Z-order_curve>
#[derive(Clone, Copy, Eq, Ord, PartialEq, PartialOrd)]
pub struct Morton3(pub u128);
