fixed incorrect comment

crates/re_renderer/shader/point_cloud.wgsl

@@ -88,7 +88,7 @@ fn vs_main(@builtin(vertex_index) vertex_idx: u32) -> VertexOut {
 
 
 // Returns distance to sphere surface (x) and distance to of closest ray hit (y)
-// Via https://iquilezles.org/articles/spherefunctions/ with some adjustments - in particular the original returns negative thicknes.
+// Via https://iquilezles.org/articles/spherefunctions/ but with more verbose names.
 fn sphere_distance(ray_origin: Vec3, ray_dir: Vec3, sphere_origin: Vec3, sphere_radius: f32) -> Vec2 {
     let sphere_radius_sq = sphere_radius * sphere_radius;
     let sphere_to_origin = ray_origin - sphere_origin;