[css-contain] Update WPT links

Author: frivoal

css-contain-1/Overview.bs

@@ -297,6 +297,8 @@ Size Containment</h3>
 		contain-size-013.html
 		contain-size-041.html
 		contain-size-042.html
+		contain-size-replaced-001.html
+		contain-size-replaced-002.html
 		</wpt>
 	2. Elements with <a>size containment</a> are <a spec=css-break-3>monolithic</a> (See [[CSS-BREAK-3#possible-breaks]]).