Correct the artifact upload date

Kordyjan · Kordyjan · commit d7e8ebe851f7 · 2021-09-07T14:37:41.000+02:00
diff --git a/_downloads/2021-09-01-3.0.2.md b/_downloads/2021-09-01-3.0.2.md
@@ -1,6 +1,6 @@
 ---
 title: Scala 3.0.2
-start: 2 September 2021
+start: 1 September 2021
 layout: downloadpage
 release_version: 3.0.2
 release_date: "September 1, 2021"
