Make it clear promise is resolved as part of control message steps

Author: youennf

index.bs

@@ -1979,7 +1979,7 @@ Methods</h4>
             5. Set the {{[[control thread state]]}} on the
                 {{AudioContext}} to <code>running</code>.
 
-            6. <a>Queue a control message</a> to resume the {{AudioContext}}.
+            6. <a>Queue a control message</a> to resume the {{AudioContext}} with <var>promise</var>.
 
             7. Return <var>promise</var>.
         </div>
@@ -1989,6 +1989,8 @@ Methods</h4>
             {{AudioContext}} means running these steps on the
             <a>rendering thread</a>:
 
+            1. Let <var>promise</var> be the promise passed into this algorithm.
+
             1. Attempt to <a href="#acquiring">acquire system resources</a>.
 
             2. Set the {{[[rendering thread state]]}} on the {{AudioContext}} to <code>running</code>.
@@ -2064,7 +2066,7 @@ Methods</h4>
 
             5. Set the {{[[control thread state]]}} on the {{AudioContext}} to <code>suspended</code>.
 
-            6. <a>Queue a control message</a> to suspend the {{AudioContext}}.
+            6. <a>Queue a control message</a> to suspend the {{AudioContext}} with <var>promise</var>.
 
             7. Return <var>promise</var>.
         </div>
@@ -2074,6 +2076,8 @@ Methods</h4>
             {{AudioContext}} means running these steps on the
             <a>rendering thread</a>:
 
+            1. Let <var>promise</var> be the promise passed into this algorithm.
+
             1. Attempt to <a>release system resources</a>.
 
             2. Set the {{[[rendering thread state]]}} on the {{AudioContext}} to <code>suspended</code>.