Editorial: fix typo

Author: johnathan79717

fetch.bs

@@ -5390,7 +5390,7 @@ run these steps:
   <p>If <var>request</var>'s <a for=request>redirect mode</a> is "<code>manual</code>", then:
 
   <ol>
-   <li><p>Assert: <var>request</var>'a <a for=request>mode</a> is "<code>navigate</code>".
+   <li><p>Assert: <var>request</var>'s <a for=request>mode</a> is "<code>navigate</code>".
 
    <li><p>Set <var>recursive</var> to false.
   </ol>