WebGLTextures: Fix typo.

src/renderers/webgl/WebGLTextures.js

@@ -662,7 +662,7 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 				} else {
 
-					glInternalFormat = _gl.DEPTH_COMPONENT16; // WebGL2 requires signed internalformat for glTexImage2D
+					glInternalFormat = _gl.DEPTH_COMPONENT16; // WebGL2 requires sized internalformat for glTexImage2D
 
 				}