Reduce font size of area header for better visual hierarchy

Author: lemurra_microsoft

webviews/dashboardView/index.css

@@ -187,7 +187,7 @@ body {
 }
 
 .area-header {
-	font-size: 16px;
+	font-size: 13px;
 	font-weight: 600;
 	margin: 0;
 	color: var(--vscode-foreground);