Update MeshBasicMaterial.html

docs/api/materials/MeshBasicMaterial.html

@@ -100,7 +100,7 @@
 
 		<h3>.[page:number refractionRatio]</h3>
 		<div>
-		he index of refraction for an environment map using [page:Textures THREE.CubeRefractionMapping]. Default is *0.98*.
+		The index of refraction for an environment map using [page:Textures THREE.CubeRefractionMapping]. Default is *0.98*.
 		</div> 
 
 		<h2>Methods</h2>