[css-backgrounds-3][editorial] Link to up-to-date implementation report, #10010

Author: svgeesus

css-backgrounds-3/Overview.bs

@@ -1,7 +1,7 @@
 <pre class='metadata'>
 Title: CSS Backgrounds and Borders Module Level 3
 Status: ED
-Implementation Report: https://test.csswg.org/harness/results/css-backgrounds-3_dev/grouped/
+Implementation Report: https://wpt.fyi/results/css/css-backgrounds
 Work Status: Testing
 Shortname: css-backgrounds
 Level: 3