Editorial: consistify clone() method of Request and Response

And address a cross-reference problem and unreachable return.

fetch.bs

@@ -6359,18 +6359,10 @@ set; otherwise false.
 
  <li><p>Set <var>clonedRequestObject</var>'s <a for=Request>request</a> to <var>clonedRequest</var>.
 
- <li>
-  <p>Set <var>clonedRequestObject</var>'s <a for=Request>headers</a> to a new {{Headers}} object
-  with the following properties:
-
-  <dl>
-   <dt><a for=Headers>header list</a>
-   <dd><var>clonedRequest</var>'s <a for=Headers>header list</a>.
-
-   <dt><a for=Headers>guard</a>
-   <dd><a>This</a>'s <a for=Request>headers</a>'s <a for=Headers>guard</a>.
-  </dl>
- </li>
+ <li><p>Set <var>clonedRequestObject</var>'s <a for=Request>headers</a> to a new {{Headers}} object
+ whose <a for=Headers>header list</a> is <var>clonedRequest</var>'s <a for=Headers>header list</a>
+ and <a for=Headers>guard</a> is <a>this</a>'s <a for=Request>headers</a>'s
+ <a for=Headers>guard</a>.
 
  <li><p>Make <var>clonedRequestObject</var>'s <a for=Request>signal</a>
  <a for=AbortSignal>follow</a> <a>this</a>'s <a for=Request>signal</a>.
@@ -6564,14 +6556,12 @@ otherwise false.
  <li><p>Set <var>clonedResponseObject</var>'s <a for=Response>response</a> to
  <var>clonedResponse</var>.
 
- <li><p>Set <var>clonedResponseObject</var>'s <a for=Request>headers</a> to a new {{Headers}} object
- whose <a for=Headers>header list</a> is set to <var>clonedResponse</var>'s
- <a for=Headers>header list</a>, and <a for=Headers>guard</a> is <a>this</a>'s
+ <li><p>Set <var>clonedResponseObject</var>'s <a for=Response>headers</a> to a new {{Headers}}
+ object whose <a for=Headers>header list</a> is <var>clonedResponse</var>'s
+ <a for=Headers>header list</a> and <a for=Headers>guard</a> is <a>this</a>'s
  <a for=Response>headers</a>'s <a for=Headers>guard</a>.
 
  <li><p>Return <var>clonedResponseObject</var>.
-
- <li><p>Return <var>clonedResponse</var>.
 </ol>