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/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;