Fix modules/ typos

Found using `codespell -q 3 -S ./3rdparty -L activ,amin,ang,atleast,childs,dof,endwhile,halfs,hist,iff,nd,od,uint`

backporting of commit: ec43292e1e

modules/video/src/ecc.cpp

@@ -90,7 +90,7 @@ static void image_jacobian_homo_ECC(const Mat& src1, const Mat& src2,
 
 
     //instead of dividing each block with den,
-    //just pre-devide the block of gradients (it's more efficient)
+    //just pre-divide the block of gradients (it's more efficient)
 
     Mat src1Divided_;
     Mat src2Divided_;

modules/video/src/opencl/pyrlk.cl

@@ -48,7 +48,7 @@
 #define GRIDSIZE    3
 #define LSx 8
 #define LSy 8
-// defeine local memory sizes
+// define local memory sizes
 #define LM_W (LSx*GRIDSIZE+2)
 #define LM_H (LSy*GRIDSIZE+2)
 #define BUFFER  (LSx*LSy)