Update README.md

Author: DeborahK

README.md

@@ -4,4 +4,4 @@ Starter files and support materials for the Pluralsight course: "Angular with Ty
 NOTE:
 - In the productResourceMock.ts file, on some systems the id variable is typed as "any" and the code works "as is".
 - In other cases, the implicit typing marks the id variable as a string. When this happens, the compiler generates an error on the comparison saying the operator "==" cannot be applied to types "number" and "string". The solution is to use the "+" unary operator to convert the array element to an integer:
-`var id = **+**parameters[length - 1];'
+`var id = **+**parameters[length - 1];`