Update InsecureTemporaryFile.qhelp

Author: ihsinme

cpp/ql/src/experimental/Security/CWE/CWE-377/InsecureTemporaryFile.qhelp

@@ -5,7 +5,8 @@
 <overview>
 <p>Working with a file, without checking its existence and its rights, as well as working with names that can be predicted, may not be safe. Requires the attention of developers.</p>
 
-</recommendation>
+</overview>
+
 <example>
 <p>The following example demonstrates erroneous and corrected work with file.</p>
 <sample src="InsecureTemporaryFile.cpp" />