Update fetch.bs

Co-authored-by: Anne van Kesteren <[email protected]>

Author: noamr

fetch.bs

@@ -6861,7 +6861,8 @@ which is an algorithm that takes no arguments:
 
 <h4 id=deferred-fetch-quota>Deferred fetching quota</h4>
 
-<!-- non-normative -->
+<p><em>This section is non-normative.</em>
+
 <p>The deferred-fetch quota is allocated to a <a for=/>top-level traversable</a> (a "tab"),
 amounting to 640 kibibytes. The top-level document and its same-origin directly nested documents
 can use this quota to queue deferred fetches, or delegate some of it to cross-origin nested