Merge pull request #27959 from abhijeetraj10-web:fix-patchNaNs-doc

Clarified supported types in cv::patchNaNs() documentation #27959

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- [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
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- [ ] There is a reference to the original bug report and related work
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      Patch to opencv_extra has the same branch name.
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Updated the docs for cv::patchNaNs() to specify that both CV_32F and CV_64F types are supported. Fixes incomplete information.

modules/core/include/opencv2/core.hpp

@@ -1711,10 +1711,13 @@ elements.
 */
 CV_EXPORTS_W bool checkRange(InputArray a, bool quiet = true, CV_OUT Point* pos = 0,
                             double minVal = -DBL_MAX, double maxVal = DBL_MAX);
+/** @brief Replaces NaNs (Not-a-Number values) in a matrix with the specified value.
 
-/** @brief Replaces NaNs by given number
-@param a input/output matrix (CV_32F type).
-@param val value to convert the NaNs
+This function modifies the input matrix in-place.
+The input matrix must be of type `CV_32F` or `CV_64F`; other types are not supported.
+
+@param a Input/output matrix (CV_32F or CV_64F type).
+@param val Value used to replace NaNs (defaults to 0).
 */
 CV_EXPORTS_W void patchNaNs(InputOutputArray a, double val = 0);