Adjust change headings on status page

Reduce the padding to fit more changes on the page and clear up the
layout.

Change-Id: I15714bb96b4ecd0ea2e40c86ca9ac32720548364
diff --git a/etc/status/public_html/index.html b/etc/status/public_html/index.html
index 21d416f..aac5024 100644
--- a/etc/status/public_html/index.html
+++ b/etc/status/public_html/index.html
@@ -74,6 +74,10 @@
             font-size: smaller;
         }
 
+        .zuul-patchset-header {
+            font-size: small;
+            padding: 8px 12px;
+        }
     </style>
 </head>
 <body>