[css-multicol-1][editorial] Updates for CR

Author: svgeesus

css-multicol-1/Overview.bs

@@ -3,8 +3,10 @@ Title: CSS Multi-column Layout Module Level 1
 Group: CSSWG
 Shortname: css-multicol
 Level: 1
-Status: ED
-Prepare for TR: no
+Status: CR
+Prepare for TR: yes
+Date: 2024-05-09
+Deadline: 2024-07-09
 Implementation Report: https://test.csswg.org/harness/results/css-multicol-1_dev/grouped/
 Work Status: Testing
 WPT Path Prefix: /css/css-multicol/