C++/Docs: respond to doc comments on PR

cpp/ql/src/Likely Bugs/Likely Typos/FutileParams.qhelp

@@ -11,7 +11,7 @@ that the incorrect function is being called, or that the author misunderstood th
 <p>In C, a function declared with an empty parameter list `()` is considered to have an unknown
 parameter list, and therefore can be called with any set of arguments. To declare a function
 which takes no arguments, you must use `(void)` as the parameter list in any forward declarations.
-In C++, either style of declaration will be considered to take no arguments.</p>
+In C++, either style of declaration indicates that the function accepts no arguments.</p>
 
 </overview>
 <recommendation>

cpp/ql/src/Likely Bugs/Likely Typos/FutileParams.ql

@@ -4,6 +4,10 @@
  *              that the code does not follow the author's intent.
  * @kind problem
  * @problem.severity warning
+ * @precision very-high
+ * @id cpp/futile-params
+ * @tags correctness
+ *       maintainability
  */
 
 import cpp