Update MeshPhongMaterial.html

`specular` is a Color, not t\Texture

docs/api/materials/MeshPhongMaterial.html

@@ -205,7 +205,7 @@
 		<h3>[property:Boolean skinning]</h3>
 		<div>Define whether the material uses skinning. Default is false.</div>
 
-		<h3>[property:Texture specular]</h3>
+		<h3>[property:Color specular]</h3>
 		<div>
 			Specular color of the material. Default is a [page:Color] set to *0x111111* (very dark grey).<br /><br />