replace args by params fix issue #3849

[joaquinelio]

Fixes issue #3849 param is the correct word when declaring a function

line 11 "accepts 2 args" is not wrong, but "with 2 params" we emphasize we are declaring the functions and params

In the summary, "args" is ok because it talks about what is expecting. It could be rephrased but I dont think it's neccesary or clearer