Fix container

Author: noamr

fetch.bs

@@ -6985,7 +6985,7 @@ setting an iframe's <a attribute for=HTMLIFrameElement>src</a>.
  for {{PermissionPolicy/"deferred-fetch"}}, <var>navigable</var>'s <a>navigable container</a> and
  <var>originToNavigateTo</var> is <code>Enabled</code>, and the
  <a>available deferred fetching quota</a> for <var>container</var>'s <a>container document</a> is
- equal or greater than 64 kibibytes, then set <var>navigable</var>'s
+ equal or greater than 64 kibibytes, then set <var>container</var>'s
  <a>deferred fetch policy</a> to {{PermissionPolicy/"deferred-fetch"}} and return.
 
  <li><p>If the <a data-lt="define an inherited policy for feature in container">inherited policy</a>