fixed typo

modules/gpu/doc/data_structures.rst

@@ -29,7 +29,7 @@ This lightweight class encapsulates pitched memory on a GPU and is passed to nvc
 
         __CV_GPU_HOST_DEVICE__ size_t elemSize() const;
 
-        /* returns pointer to the beggining of the given image row */
+        /* returns pointer to the beginning of the given image row */
         __CV_GPU_HOST_DEVICE__ T* ptr(int y = 0);
         __CV_GPU_HOST_DEVICE__ const T* ptr(int y = 0) const;
     };
@@ -37,6 +37,7 @@ This lightweight class encapsulates pitched memory on a GPU and is passed to nvc
     typedef DevMem2D_<unsigned char> DevMem2D;
     typedef DevMem2D_<float> DevMem2Df;
     typedef DevMem2D_<int> DevMem2Di;
+..
 
 
 .. index:: gpu::PtrStep\_