monoblue: add a margin for help text container

monoblue: add a margin for help text container

--- a/mercurial/templates/static/style-monoblue.css	Thu Sep 03 23:46:31 2015 +0800
+++ b/mercurial/templates/static/style-monoblue.css	Fri Sep 04 02:51:57 2015 +0800
@@ -514,3 +514,7 @@
 .scroll-loading-error {
     background-color: #FFCCCC !important;
 }
+
+#doc {
+    margin: 0 30px;
+}