Examples: Fixed comment typo.

examples/webgl_loader_gltf_extensions.html

@@ -356,7 +356,7 @@
 								 ( node.material.isShaderMaterial && node.material.envMap !== undefined ) ) ) {
 
 								node.material.envMap = envMap;
-								node.material.envMapIntensity = 1.5; // boombox seems to dark otherwise
+								node.material.envMapIntensity = 1.5; // boombox seems too dark otherwise
 
 							}