Update Lut.html

docs/api/examples/Lut.html

@@ -25,7 +25,7 @@
 
 		<h3>[name]( colormap, numberOfColors )</h3>
                 <div>
-                colormap - optional argument that sets a colormap from prefefined colormaps. Available colormaps are : "rainbow", "cooltowarm", "blackbody".
+                colormap - optional argument that sets a colormap from predefined colormaps. Available colormaps are : "rainbow", "cooltowarm", "blackbody".
                 numberOfColors - optional argument that sets the number of colors used to represent the data array.
 		</div>