Pull Request Readiness Checklist

Like #21128
Typos discovered by #21121 which uses https://pypi.org/project/codespell/

codespell --count --ignore-words-list=activ,hist,halfs,ist,lod,msdos,numer \
    --skip="./3rdparty/*,*.bib,*.c,*.cc,*.cl,*.clj,*.cmake,*.cpp,*.cu,*.h,*.hpp,*.java,*.json,*.markdown,*.proto,*.svg,*.txt,*.xml"

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

• I agree to contribute to the project under Apache 2 License.
• 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
• The PR is proposed to the proper branch
• There is a reference to the original bug report and related work
• There is accuracy test, performance test, and test data in opencv_extra repository, if applicable
  Patch to opencv_extra has the same branch name.
• The feature is well documented and sample code can be built with the project CMake