Matrix3: Fixed console message.

src/math/Matrix3.js

@@ -188,7 +188,7 @@ THREE.Matrix3.prototype = {
 
 		if ( det === 0 ) {
 
-			var msg = "Matrix3.getInverse(): can't invert matrix, determinant is 0";
+			var msg = "THREE.Matrix3.getInverse(): can't invert matrix, determinant is 0";
 
 			if ( throwOnInvertible || false ) {