[css-contain-1] Update status and changes sections to mention amendment

Author: frivoal

css-contain-1/Overview.bs

@@ -18,6 +18,7 @@ Editor: Tab Atkins, Google, http://xanthir.com/contact/, w3cid 42199
 Editor: Florian Rivoal, On behalf of Bloomberg, https://florian.rivoal.net/, w3cid 43241
 Abstract: This CSS module describes the 'contain' property, which indicates that the element's subtree is independent of the rest of the page. This enables heavy optimizations by user agents when used well.
 Status Text: A <a href="https://drafts.csswg.org/css-contain-1/issues-2019-cr.html">Disposition of Comments</a> and an <a href="https://drafts.csswg.org/css-contain-1/implementation-report-2019-09">Implementation Report</a> are available.
+	<div class=correction><a href="https://www.w3.org/Consortium/Process/#candidate-correction">Candidate corrections</a> are marked in the document.</div>
 WPT Path Prefix: css/css-contain/
 Include MDN Panels: no
 </pre>
@@ -997,6 +998,7 @@ This appendix is <em>informative</em>.
 
 	<ul>
 		<li>
+			Marked as a <a class=correction href="#c1">Candidate Correction 1</a>:
 			Rewrote much of the [[#containment-size]] section in more detail
 			to clarify ambiguities about how it is meant to work,
 			and improve the general legibility.