[resize-observer-1] Relevant step of HTML's event loop is now 7.16

Fixes w3c#7546

Author: Loirooriol

resize-observer-1/Overview.bs

@@ -581,13 +581,13 @@ A {{ResizeObserver}} will remain alive until both of these conditions are met:
 
 <h4 id="html-event-loop"> HTML Processing Model: Event Loop</h4>
 
-{{ResizeObserver}} processing happens inside the step 7.12 of the <a>HTML Processing Model</a> event loop.
+{{ResizeObserver}} processing happens inside the step 7.16 of the <a>HTML Processing Model</a> event loop.
 
-Step 12 is currently underspecified as:
+Step 16 is currently underspecified as:
 
 <q>For each fully active Document in docs, update the rendering or user interface of that Document and its browsing context to reflect the current state.</q>.
 
-Existing step 12 can be fully specified as:
+Existing step 16 can be fully specified as:
 
 For each fully active Document in docs, run the following steps for that Document and its browsing contents:
 
@@ -597,7 +597,7 @@ For each fully active Document in docs, run the following steps for that Documen
 
     3. Paint
 
-{{ResizeObserver}} extends step 12 with resize notifications.
+{{ResizeObserver}} extends step 16 with resize notifications.
 It tries to deliver all pending notifications by looping
 until no pending notifications are available. This can cause
 an infinite loop.
@@ -612,7 +612,7 @@ are undelivered notifications. Elements with undelivered notifications
 will be considered for delivery in the next loop.
 
 
-Step 12 with {{ResizeObserver}} notifications is:
+Step 16 with {{ResizeObserver}} notifications is:
 
 For each fully active Document in docs, run the following steps for that Document and its browsing context: