Merge pull request #23662 from akormous:docfix

Fix truncated sentenced in boxPoints documentation #22975 #23662

Resolves #22975

Completed the sentence as per the suggestion given in the issue #22975
### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake

modules/imgproc/include/opencv2/imgproc.hpp

@@ -4086,7 +4086,7 @@ The function finds the four vertices of a rotated rectangle. This function is us
 rectangle. In C++, instead of using this function, you can directly use RotatedRect::points method. Please
 visit the @ref tutorial_bounding_rotated_ellipses "tutorial on Creating Bounding rotated boxes and ellipses for contours" for more information.
 
-@param box The input rotated rectangle. It may be the output of
+@param box The input rotated rectangle. It may be the output of @ref minAreaRect.
 @param points The output array of four vertices of rectangles.
  */
 CV_EXPORTS_W void boxPoints(RotatedRect box, OutputArray points);