Add missing heading

kgryte · kgryte · commit 39e6111f0d7a · 2017-12-26T15:30:56.000-08:00
diff --git a/lib/node_modules/@stdlib/assert/is-node/README.md b/lib/node_modules/@stdlib/assert/is-node/README.md
@@ -25,6 +25,8 @@ var bool = IS_NODE;
 
 <section class="notes">
 
+## Notes
+
 -   In order to determine whether the runtime is [Node.js][node-js], the implementation must resolve the global scope, thus requiring function generation. The use of function generation may be problematic in browser contexts enforcing a strict [content security policy][mdn-csp] (CSP).
 
 </section>
