Further fixes for camera and typos

index.bs

@@ -929,15 +929,15 @@ interface MediaSession {
       Let <var>p</var> be a new promise.
     </li>
     <li>
-      Let <var>document<var> be [=this=]'s [=relevant global object=]'s
-      [=associated `Document`=].
+      Let <var>document</var> be [=this=]'s [=relevant global object=]'s
+      [=associated Document=].
     </li>
     <li>
       <a>In parallel</a>, run the following substeps:
       <ul>
         <li>The user agent MAY wait to proceed, for instance if
-        <var>active</var> is <code>true</code> and <var>document<var>'s
-        [=Document/visibility state=] is not `"visible"`.</li>
+        <var>active</var> is <code>true</code> and <var>document</var>'s
+        [=Document/visibility state=] is not "visible".</li>
         <li>If the user agent denies permission to change the microphone state
         to <var>active</var>, reject <var>p</var> with a <a
         exception>NotAllowedError</a> and abort these steps.</li>
@@ -964,11 +964,15 @@ interface MediaSession {
       Let <var>p</var> be a new promise.
     </li>
     <li>
-      <a>Queue a task</a> to run the following substeps:
+      Let <var>document</var> be [=this=]'s [=relevant global object=]'s
+      [=associated Document=].
+    </li>
+    <li>
+      <a>In parallel</a>, run the following substeps::
       <ul>
         <li>The user agent MAY wait to proceed, for instance if
-        <var>active</var> is <code>true</code> and the relevant global object's
-        associated <code>Document</code> visiblity state is not "visible".</li>
+        <var>active</var> is <code>true</code> and <var>document</var>'s
+        [=Document/visibility state=] is not "visible".</li>
         <li>If the user agent denies permission to change the camera state to
         <var>active</var>, reject <var>p</var> with a <a
         exception>NotAllowedError</a> and abort these steps.</li>