Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: jzabroski

csharp/ql/src/Security Features/CWE-548/Web.config.good

@@ -3,5 +3,5 @@
   <system.webServer>
     <directoryBrowse enabled="false"/>
    ...
-  </system.web>
+  </system.webServer>
 </configuration>