Disambiguate reference to "children"

index.bs

@@ -107,6 +107,9 @@ spec: PAGE-VISIBILITY; urlPrefix: https://www.w3.org/TR/page-visibility-2/#
         text: document visibility state; url: dom-visibilitystate
 </pre>
 <pre class="link-defaults">
+spec:dom
+    type:dfn
+        text:children
 spec: fingerprinting-guidance
     type: dfn
         text: fingerprinting surface
@@ -1306,7 +1309,7 @@ invoked and given a {{BluetoothPermissionStorage}} |storage|, MUST return
 [=a new promise=] |promise| and run the following steps [=in parallel=]:
 
 1. If [=this=]'s [=relevant global object=]'s [=associated Document=] is not
-    [=allowed to use=] the [=policy-controlled feature=] named 
+    [=allowed to use=] the [=policy-controlled feature=] named
     "[=policy-controlled feature/bluetooth=]", <a>reject</a> |promise| with a
     {{SecurityError}} and abort these steps.
 1. Let |devices| be a new empty {{Array}}.
@@ -1386,7 +1389,7 @@ steps:
 </div>
 
 1. If [=this=]'s [=relevant global object=]'s [=associated Document=] is not
-    [=allowed to use=] the [=policy-controlled feature=] named 
+    [=allowed to use=] the [=policy-controlled feature=] named
     "[=policy-controlled feature/bluetooth=]", throw a {{SecurityError}} and
     abort these steps.
 1. <p id="requestDevice-user-gesture">Check that the algorithm is triggered
@@ -1932,7 +1935,7 @@ when invoked, MUST return <a>a new promise</a> |promise| and run the following
 steps <a>in parallel</a>:
 
 1. If [=this=]'s [=relevant global object=]'s [=associated Document=] is not
-    [=allowed to use=] the [=policy-controlled feature=] named 
+    [=allowed to use=] the [=policy-controlled feature=] named
     "[=policy-controlled feature/bluetooth=]", <a>queue a task</a> to
     <a>resolve</a> |promise| with `false`, and abort these steps.
 1. <p id="override-availability">If the user has configured the UA to return a