Apply suggestions from code review

thanks for your corrections.
and of course sorry for my text.

Co-authored-by: Mathias Vorreiter Pedersen <mathiasvp@github.com>

Author: ihsinme

cpp/ql/src/experimental/Security/CWE/CWE-415/DoubleFree.qhelp

@@ -3,7 +3,7 @@
   "qhelp.dtd">
 <qhelp>
 <overview>
-<p>Double freeing of a previously allocated resource can lead to various vulnerabilities in the program. Requires the attention of developers.</p>
+<p>Freeing a previously allocated resource twice can lead to various vulnerabilities in the program.</p>
 
 </overview>
 <recommendation>

cpp/ql/src/experimental/Security/CWE/CWE-415/DoubleFree.ql

@@ -1,9 +1,8 @@
 /**
  * @name Errors When Double Free
- * @description Double freeing of a previously allocated resource can lead to various vulnerabilities in the program
- *              and requires the attention of the developer.
+ * @description Freeing a previously allocated resource twice can lead to various vulnerabilities in the program.
  * @kind problem
- * @id cpp/errors-when-double-free
+ * @id cpp/double-free
  * @problem.severity warning
  * @precision medium
  * @tags security