“the worker's Documents” ➡ “owner set”

This aligns with the changes made in whatwg/html#2520
whatwg/html@59a4750

docs/index.bs

@@ -244,7 +244,7 @@ spec: webappsec-referrer-policy; urlPrefix: https://w3c.github.io/webappsec-refe
 
     When the request's [=request/url=] is not <a lt="is local">local</a>, a [=/service worker client=] <a lt="Match Service Worker Registration">matches</a> a [=/service worker registration=] from <a>scope to registration map</a>. That is, the [=/service worker client=] attempts to consult a [=/service worker registration=] whose [=service worker registration/scope url=] <a lt="Match Service Worker Registration">matches</a> its <a>creation URL</a>.
 
-    When the request's [=request/url=] <a>is local</a>, if the [=/service worker client=]'s <a>responsible browsing context</a> is a <a>nested browsing context</a> or the [=/service worker client=] is a <a>worker client</a>, the [=/service worker client=] inherits the [=/service worker registration=] from its <a>parent browsing context</a>'s environment or one of <a>the worker's Documents</a>' environment, respectively, if it exists.
+    When the request's [=request/url=] <a>is local</a>, if the [=/service worker client=]'s <a>responsible browsing context</a> is a <a>nested browsing context</a> or the [=/service worker client=] is a <a>worker client</a>, the [=/service worker client=] inherits the [=/service worker registration=] from its <a>parent browsing context</a>'s environment or from the environment of a {{Document}} in the [=/service worker client=]'s [=environment settings object/global object=]'s [=owner set=], respectively, if it exists.
 
     If the <a>selection</a> was successful, the <a lt="selection">selected</a> [=/service worker registration=]'s <a>active worker</a> starts to <dfn id="dfn-control">control</dfn> the [=/service worker client=]. Otherwise, the flow returns to [=/fetch=] where it falls back to the default behavior. When a [=/service worker client=] is <a>controlled</a> by an <a>active worker</a>, it is considered that the [=/service worker client=] is <dfn id="dfn-use" lt="using|uses|used">using</dfn> the <a>active worker</a>'s <a>containing service worker registration</a>.
   </section>