fix typo

Author: FantasqueX

modules/imgproc/include/opencv2/imgproc/segmentation.hpp

@@ -121,7 +121,7 @@ class CV_EXPORTS_W_SIMPLE IntelligentScissorsMB
      *
      * @param targetPt The target point
      * @param[out] contour The list of pixels which contains optimal path between the source and the target points of the image. Type is CV_32SC2 (compatible with `std::vector<Point>`)
-     * @param backward Flag to indicate reverse order of retrived pixels (use "true" value to fetch points from the target to the source point)
+     * @param backward Flag to indicate reverse order of retrieved pixels (use "true" value to fetch points from the target to the source point)
      */
     CV_WRAP void getContour(const Point& targetPt, OutputArray contour, bool backward = false) const;