fix: lasagna-master task 5 description (#841)

Author: vaeng

exercises/concept/lasagna-master/.docs/instructions.md

@@ -95,7 +95,7 @@ With a mixture of excitement and trepidation, you decide to reach out to your gr
 As expected, she responds in her cryptic manner, offering a single secret ingredient, wrapped in mystery.
 
 Your great-grand auntie's contribution adds a layer of complexity, that you want to use in your recipe.
-Implement another version of the `addSecretIngredient` function that accepts two arguments: a const reference to a vector representing the friend's list of ingredients and a single string representing the enigmatic offering from your great-grand auntie.
+Implement another version of the `addSecretIngredient` function that accepts two arguments: a reference to a vector representing your list of ingredients and a single string representing the enigmatic offering from your great-grand auntie.
 
 ```cpp
 std::vector<std::string> myList{"noodles", "meat", "sauce", "mozzarella", "?"};