Merge pull request #1388 from Semmle/xiemaisi-patch-1

CPP: Fix name of example file in qhelp.

Author: jbj

cpp/ql/src/Security/CWE/CWE-676/DangerousFunctionOverflow.qhelp

@@ -17,7 +17,7 @@ rules</strong> below for rules that identify other dangerous functions.</p>
 </recommendation>
 <example>
 <p>The following example gets a string from standard input in two ways:</p>
-<sample src="DangerousUseOfGets" />
+<sample src="DangerousFunctionOverflow.c" />
 
 <p>The first version uses <code>gets</code> and will overflow if the input
 is longer than the buffer. The second version of the code