Merge pull request #26038 from shengyu7697:fix-typo

Fix typos #26038

Fix typos

### 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
- [ ] 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

modules/gapi/test/streaming/gapi_streaming_tests.cpp

@@ -316,7 +316,7 @@ public:
 
     static std::string exception_msg()
     {
-        return "InvalidSource sucessfuly failed!";
+        return "InvalidSource successfully failed!";
     }
 
     bool pull(cv::gapi::wip::Data& d) override {
@@ -355,7 +355,7 @@ GAPI_OCV_KERNEL(GThrowExceptionKernel, GThrowExceptionOp)
 {
     static std::string exception_msg()
     {
-        return "GThrowExceptionKernel sucessfuly failed";
+        return "GThrowExceptionKernel successfully failed";
     }
 
     static void run(const cv::Mat&, cv::Mat&)