docs: fix spelling errors

- 'tirangle' -> 'triangle'
- 'cirlce' -> 'circle'
- 'gradiantSize' -> 'gradientSize'
- 'unnotied' -> 'unnoticed'
- 'consistensy' -> 'consistency'
- 'implemention' -> 'implementation'
- 'suppported/Unsuppported/suppport' -> 'supported/Unsupported/support'

modules/imgproc/test/test_convhull.cpp

@@ -1053,7 +1053,7 @@ TEST_P(minEnclosingTriangle_Modes, accuracy)
             const Mat midPoint = (cur + next) / 2;
             EXPECT_TRUE(isPointOnHull(hull, midPoint));
 
-            // at least one of hull edges must be on tirangle edge
+            // at least one of hull edges must be on triangle edge
             hasEdgeOnHull = hasEdgeOnHull || isEdgeOnHull(hull, cur, next);
         }
         EXPECT_TRUE(hasEdgeOnHull);