Fix some references that are breaking the build

Author: jgraham

index.bs

@@ -154,6 +154,7 @@ spec: HTML; urlPrefix: https://html.spec.whatwg.org/multipage/
     text: set up a window environment settings object; url: window-object.html#set-up-a-window-environment-settings-object
     text: set up a worker environment settings object; url: workers.html#set-up-a-worker-environment-settings-object
     text: set up a worklet environment settings object; url: worklets.html#set-up-a-worklet-environment-settings-object
+    text: shared worker; url: workers.html#shared-workers
     text: window open steps; url: window-object.html#window-open-steps
     text: worker event loop; url: webappapis.html#worker-event-loop-2
     text: worklet global scopes; url: worklets.html#concept-document-worklet-global-scopes
@@ -996,7 +997,7 @@ the DOM APIs made by scripts running in the browsing context containing the
 document.
 
 A [=BiDi session=] has a <dfn>sandbox map</dfn> which is a weak map in which the
-keys are [=window=] objects, and the values are maps between strings and
+keys are {{Window}} objects, and the values are maps between strings and
 {{SandboxWindowProxy}} objects.
 
 Note: The definition of sandboxes here is an attempt to codify the behaviour of
@@ -4097,7 +4098,7 @@ To <dfn>get the realm info</dfn> given |environment settings|:
 1. Run the steps under the first matching condition:
 
   <dl>
-    <dt>|global object| is a [=Window=] object
+    <dt>|global object| is a {{Window}} object
     <dd>
       1. Let |document| be |environment settings|' [=relevant global object=]'s
          <a>associated <code>Document</code></a>.