Migrate to references exported from the WebIDL spec

Algorithms for working with Promises have moved from [promises-guide] to
[WebIDL].

This change also creates an anchor for the "initializing the Document
object" algorithm in the HTML specification. This may not be the right
way of extending this algorithm with additional steps.

index.bs

@@ -105,6 +105,10 @@ spec: fingerprinting-guidance; urlPrefix: https://w3c.github.io/fingerprinting-g
     type: dfn
         text: fingerprinting surface; url: dfn-fingerprinting-surface
 
+spec: html; urlPrefix: https://html.spec.whatwg.org/#
+    type: dfn
+        text: initializing the Document object; url: initialise-the-document-object
+
 spec: WebIDL; urlPrefix: https://heycam.github.io/webidl/#
     type: dfn
         text: a copy of the bytes held; url: dfn-get-buffer-source-copy
@@ -121,7 +125,7 @@ spec: html
     type: dfn
         text: browsing context; for: /
         text: global object; for: /
-spec: promises-guide-1
+spec: webidl
     type: dfn
         text: resolve
 </pre>
@@ -1073,7 +1077,7 @@ spec: promises-guide-1
         `null`
       </td>
       <td>
-        Set to a {{BluetoothDevice}} while <a>initializing a new `Document` object</a>
+        Set to a {{BluetoothDevice}} while <a>initializing the `Document` object</a>
         if the `Document` was opened from the device.
       </td>
     </tr>
@@ -1096,7 +1100,7 @@ spec: promises-guide-1
         advertises a URL,
         the UA may allow the user to navigate to this URL.
       </span>
-      If this happens, then as part of <a>initializing a new `Document` object</a>,
+      If this happens, then as part of <a>initializing the `Document` object</a>,
       the UA MUST run the following steps:
     </p>
     <ol>
@@ -3114,15 +3118,15 @@ spec: promises-guide-1
             Let <var>promise</var> be the result.
           </li>
           <li>
-            Return the result of
-            <a>transforming</a> <var>promise</var> with a fulfillment handler that:
+            <a>Upon fulfillment</a> of <var>promise</var> with |result|, run the
+            following steps:
             <ul>
-              <li>If its argument is empty, throws a {{NotFoundError}},</li>
+              <li>If |result| is empty, throw a {{NotFoundError}},</li>
               <li>
                 Otherwise, if the <var>single</var> flag is set,
-                returns the first (only) element of its argument.
+                returns the first (only) element of |result|.
               </li>
-              <li>Otherwise, returns its argument.</li>
+              <li>Otherwise, return |result|.</li>
             </ul>
           </li>
         </ol>
@@ -3430,16 +3434,14 @@ spec: promises-guide-1
           <code><var>gattServer</var>.{{BluetoothRemoteGATTServer/[[activeAlgorithms]]}}</code>.
         </li>
         <li>
-          Return the result of <a>transforming</a> <var>promise</var>
-          with fulfillment and rejection handlers that perform the following steps:
-          <dl>
-            <dt>fulfillment handler</dt>
-            <dd>
+          <a>React</a> to <var>promise</var>:
+          <ul>
+            <li>If |promise| was fulfilled with value |result|, then:
               <ol>
                 <li>
                   If <var>promise</var> is in
                   <code><var>gattServer</var>.{{BluetoothRemoteGATTServer/[[activeAlgorithms]]}}</code>,
-                  remove it and return the first argument.
+                  remove it and return |result|.
                 </li>
                 <li>
                   Otherwise, throw a {{NetworkError}}.
@@ -3449,14 +3451,13 @@ spec: promises-guide-1
                   </span>
                 </li>
               </ol>
-            </dd>
-            <dt>rejection handler</dt>
-            <dd>
+            </li>
+            <li>If |promise| was rejected with reason |error|, then:
               <ol>
                 <li>
                   If <var>promise</var> is in
                   <code><var>gattServer</var>.{{BluetoothRemoteGATTServer/[[activeAlgorithms]]}}</code>,
-                  remove it and throw the first argument.
+                  remove it and throw |error|.
                 </li>
                 <li>
                   Otherwise, throw a {{NetworkError}}.
@@ -3466,8 +3467,8 @@ spec: promises-guide-1
                   </span>
                 </li>
               </ol>
-            </dd>
-          </dl>
+            </li>
+          </ul>
         </li>
       </ol>
     </div>

scanning.bs

@@ -51,7 +51,7 @@ spec: web-bluetooth; urlPrefix: index.html#
         text: BluetoothDevice
 </pre>
 <pre class="link-defaults">
-spec: promises-guide-1
+spec: webidl
     type: dfn
         text: resolve
 spec:web-bluetooth