Update normal-codec-pars.frag

Author: vanruesc

src/shader-chunks/shaders/normal-codec-pars.frag

@@ -3,6 +3,7 @@
  *
  * @see https://knarkowicz.wordpress.com/2014/04/16/octahedron-normal-vector-encoding/
  * @see https://aras-p.info/texts/CompactNormalStorage.html
+ * @see https://x.com/Stubbesaurus/status/937994790553227264
  */
 
 vec2 pp_encodeNormal(vec3 n) {
@@ -15,7 +16,6 @@ vec2 pp_encodeNormal(vec3 n) {
 
 vec3 pp_decodeNormal(vec2 f) {
 
-	// https://twitter.com/Stubbesaurus/status/937994790553227264
 	vec3 n = vec3(f.x, f.y, 1.0 - abs(f.x) - abs(f.y));
 	float t = clamp(-n.z, 0.0, 1.0);
 	n.xy += vec2(n.x >= 0.0 ? -t : t, n.y >= 0.0 ? -t : t);