message: python: don't use 'cv2.' in documentation
diff: @@ -488,9 +488,9 @@ FastFeatureDetector::TYPE_5_8
  Detects corners using the FAST algorithm by @cite Rosten06 .
  -@note In Python API, types are given as cv2.FAST_FEATURE_DETECTOR_TYPE_5_8,
  -cv2.FAST_FEATURE_DETECTOR_TYPE_7_12 and cv2.FAST_FEATURE_DETECTOR_TYPE_9_16. For corner
  -detection, use cv2.FAST.detect() method.
  +@note In Python API, types are given as cv.FAST_FEATURE_DETECTOR_TYPE_5_8,
  +cv.FAST_FEATURE_DETECTOR_TYPE_7_12 and cv.FAST_FEATURE_DETECTOR_TYPE_9_16. For corner
  +detection, use cv.FAST.detect() method.
  */
  CV_EXPORTS void FAST( InputArray image, CV_OUT std::vector<KeyPoint>& keypoints,
  int threshold, bool nonmaxSuppression, FastFeatureDetector::DetectorType type );
  @@ -1224,9 +1224,9 @@ output image. See possible flags bit values below.
  DrawMatchesFlags. See details above in drawMatches .
  @note
  -For Python API, flags are modified as cv2.DRAW_MATCHES_FLAGS_DEFAULT,
  -cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS, cv2.DRAW_MATCHES_FLAGS_DRAW_OVER_OUTIMG,
  -cv2.DRAW_MATCHES_FLAGS_NOT_DRAW_SINGLE_POINTS
  +For Python API, flags are modified as cv.DRAW_MATCHES_FLAGS_DEFAULT,
  +cv.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS, cv.DRAW_MATCHES_FLAGS_DRAW_OVER_OUTIMG,
  +cv.DRAW_MATCHES_FLAGS_NOT_DRAW_SINGLE_POINTS
  */
  CV_EXPORTS_W void drawKeypoints( InputArray image, const std::vector<KeyPoint>& keypoints, InputOutputArray outImage,
  const Scalar& color=Scalar::all(-1), DrawMatchesFlags flags=DrawMatchesFlags::DEFAULT );
  