tools: fix commit message cell border in fast.vlang.io

Author: spytheman

cmd/tools/fast/header.html

@@ -24,7 +24,9 @@
 table td:nth-child(3) {
 	width: 650px!important;
 	overflow: hidden;
-	display: block;	
+	display: block;
+	border: 0px;
+	border-bottom: 1px solid lightgray;
 }
 .diff {
 	border-radius: 2.5px;