Fixed code markup

Author: aegilops

javascript/ql/src/Security/CWE-693/InsecureHelmet.qhelp

@@ -19,7 +19,7 @@
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         <p>
-            Users of the query can extend the set of required Helmet features by adding additional checks for them, using CodeQL <a href="https://codeql.github.com/docs/codeql-language-guides/customizing-library-models-for-javascript/">data extensions</a> in a <a href="https://docs.github.com/en/code-security/codeql-cli/using-the-advanced-functionality-of-the-codeql-cli/creating-and-working-with-codeql-packs#creating-a-codeql-model-pack">CodeQL model pack</a>. See `CUSTOMIZING.md` in the query source for more information.
+            Users of the query can extend the set of required Helmet features by adding additional checks for them, using CodeQL <a href="https://codeql.github.com/docs/codeql-language-guides/customizing-library-models-for-javascript/">data extensions</a> in a <a href="https://docs.github.com/en/code-security/codeql-cli/using-the-advanced-functionality-of-the-codeql-cli/creating-and-working-with-codeql-packs#creating-a-codeql-model-pack">CodeQL model pack</a>. See <code>CUSTOMIZING.md</code> in the query source for more information.
         </p>
 
     </overview>