Fix legacyTransluceny typo (#16803)

https://forum.babylonjs.com/t/typo-in-legacytransluceny/59098/3

Author: sebavan

packages/dev/core/src/Materials/PBR/pbrSubSurfaceConfiguration.ts

@@ -79,7 +79,7 @@ export class PBRSubSurfaceConfiguration extends MaterialPluginBase {
      * Default value used for legacyTranslucency.
      *
      * This property only exists for backward compatibility reasons.
-     * Set it to true if your rendering in 8.0+ is different from that in 7 when you use sub-surface transluceny. Default is false.
+     * Set it to true if your rendering in 8.0+ is different from that in 7 when you use sub-surface translucency. Default is false.
      */
     public static DEFAULT_LEGACY_TRANSLUCENCY = false;
 
@@ -362,10 +362,22 @@ export class PBRSubSurfaceConfiguration extends MaterialPluginBase {
 
     /**
      * This property only exists for backward compatibility reasons.
-     * Set it to true if your rendering in 8.0+ is different from that in 7 when you use sub-surface transluceny. Default is false.
+     * Set it to true if your rendering in 8.0+ is different from that in 7 when you use sub-surface translucency. Default is false.
      */
     @serialize()
-    public legacyTransluceny = PBRSubSurfaceConfiguration.DEFAULT_LEGACY_TRANSLUCENCY;
+    public legacyTranslucency = PBRSubSurfaceConfiguration.DEFAULT_LEGACY_TRANSLUCENCY;
+
+    /**
+     * Keeping for backward compatibility... Should not be used anymore. It has been replaced by
+     * the property with the correct spelling.
+     * @see legacyTranslucency
+     */
+    public get legacyTransluceny(): boolean {
+        return this.legacyTranslucency;
+    }
+    public set legacyTransluceny(value: boolean) {
+        this.legacyTranslucency = value;
+    }
 
     private _scene: Scene;
 
@@ -481,7 +493,7 @@ export class PBRSubSurfaceConfiguration extends MaterialPluginBase {
             defines.SS_DISPERSION = this._isDispersionEnabled;
             defines.SS_TRANSLUCENCY = this._isTranslucencyEnabled;
             defines.SS_TRANSLUCENCY_USE_INTENSITY_FROM_THICKNESS = false;
-            defines.SS_TRANSLUCENCY_LEGACY = this.legacyTransluceny;
+            defines.SS_TRANSLUCENCY_LEGACY = this.legacyTranslucency;
             defines.SS_SCATTERING = this._isScatteringEnabled;
             defines.SS_THICKNESSANDMASK_TEXTURE = false;
             defines.SS_REFRACTIONINTENSITY_TEXTURE = false;