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/imgproc/src/hough.cpp

@@ -603,7 +603,7 @@ HoughLinesProbabilistic( Mat& image,
             if( k > 0 )
                 dx = -dx, dy = -dy;
 
-            // walk along the line using fixed-point arithmetics,
+            // walk along the line using fixed-point arithmetic,
             // stop at the image border or in case of too big gap
             for( ;; x += dx, y += dy )
             {
@@ -651,7 +651,7 @@ HoughLinesProbabilistic( Mat& image,
             if( k > 0 )
                 dx = -dx, dy = -dy;
 
-            // walk along the line using fixed-point arithmetics,
+            // walk along the line using fixed-point arithmetic,
             // stop at the image border or in case of too big gap
             for( ;; x += dx, y += dy )
             {
@@ -968,7 +968,7 @@ void HoughLinesPointSet( InputArray _point, OutputArray _lines, int lines_max, i
     createTrigTable( numangle, min_theta, theta_step,
                      irho, tabSin, tabCos );
 
-    // stage 1. fill accumlator
+    // stage 1. fill accumulator
     for( i = 0; i < (int)point.size(); i++ )
         for(int n = 0; n < numangle; n++ )
         {

modules/imgproc/src/morph.dispatch.cpp

@@ -269,7 +269,7 @@ static bool ippMorph(int op, int src_type, int dst_type,
         return false;
 
     // Multiple iterations on small mask is not effective in current integration
-    // Implace imitation for 3x3 kernel is not efficient
+    // Inplace imitation for 3x3 kernel is not efficient
     // Advanced morphology for small mask introduces degradations
     if((iterations > 1 || src_data == dst_data || (op != MORPH_ERODE && op != MORPH_DILATE)) && kernel_width*kernel_height < 25)
         return false;

modules/imgproc/src/rotcalipers.cpp

@@ -104,7 +104,7 @@ static void rotatingCalipers( const Point2f* points, int n, int mode, float* out
     /* rotating calipers sides will always have coordinates
      (a,b) (-b,a) (-a,-b) (b, -a)
      */
-    /* this is a first base bector (a,b) initialized by (1,0) */
+    /* this is a first base vector (a,b) initialized by (1,0) */
     float orientation = 0;
     float base_a;
     float base_b = 0;