update return sample

Author: totoprayogo1916

user_guide_src/source/helpers/array_helper.rst

@@ -70,7 +70,7 @@ The following functions are available:
 
         // Returns: 23
         $barBaz = dot_array_search('foo.bar\.baz', $data);
-        // Returns: 42
+        // Returns: 43
         $fooBar = dot_array_search('foo\.bar.baz', $data);