C++: Simplify description.

Author: MathiasVP

cpp/ql/src/Security/CWE/CWE-193/InvalidPointerDeref.ql

@@ -1,7 +1,6 @@
   /**
    * @name Invalid pointer dereference
-   * @description Dereferencing a pointer that points past its allocation is undefined behavior
-   *              and may lead to security vulnerabilities.
+   * @description Dereferencing an out-of-bounds pointer is undefined behavior and may lead to security vulnerabilities.
    * @kind path-problem
    * @problem.severity error
    * @security-severity 9.3