Update fetch.bs

fetch.bs

@@ -4748,17 +4748,19 @@ these steps:
 
   <ol>
    <li>
-    <p>If <var>makeCORSPreflight</var> is true and one of these conditions is true:
+    <p>If one of these conditions is true:
 
     <ul class=brief>
-     <li><p>There is no <a>method cache entry match</a> for <var>request</var>'s
-     <a for=request>method</a> using <var>request</var>, and either <var>request</var>'s
+     <li><p><var>makeCORSPreflight</var> is true and there is no <a>method cache entry match</a> for
+     <var>request</var>'s <a for=request>method</a> using <var>request</var>, and either <var>request</var>'s
      <a for=request>method</a> is not a <a>CORS-safelisted method</a> or <var>request</var>'s
      <a>use-CORS-preflight flag</a> is set.
 
-     <li>There is at least one <a for=list>item</a> in the <a>CORS-unsafe request-header names</a>
-     with <var>request</var>'s <a for=request>header list</a> for which there is no
-     <a>header-name cache entry match</a> using <var>request</var>.
+     <li><var>makeCORSPreflight</var> is true and there is at least one <a for=list>item</a> in the
+     <a>CORS-unsafe request-header names</a> with <var>request</var>'s <a for=request>header list</a>
+     for which there is no <a>header-name cache entry match</a> using <var>request</var>.
+
+     <li><a>Header size is over cors limit</a> is true.
     </ul>
 
     <p>Then: