message: Fix typo in js_tutorials
diff: @@ -22,7 +22,7 @@ Image properties include number of rows, columns and size, depth, channels, type
  let src = cv.imread("canvasInput");
  console.log('image width: ' + src.cols + '\n' +
  'image height: ' + src.rows + '\n' +
  - 'image size: ' + src.size().width + '*' src.size().height + '\n' +
  + 'image size: ' + src.size().width + '*' + src.size().height + '\n' +
  'image depth: ' + src.depth() + '\n' +
  'image channels ' + src.channels() + '\n' +
  'image type: ' + src.type() + '\n');
  