[appengine] Update overview page's title and unify placeholders

Change-Id: If93a4f69b7d13ce055720ea1e9f2fd5b65ab2e3a
Reviewed-on: https://dart-review.googlesource.com/c/dart_ci/+/201840
Reviewed-by: William Hesse <whesse@google.com>
Commit-Queue: Karl Klose <karlklose@google.com>
diff --git a/appengine/bin/server.dart b/appengine/bin/server.dart
index 63f8542..315f1e3 100644
--- a/appengine/bin/server.dart
+++ b/appengine/bin/server.dart
@@ -2,7 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-/// Serves the log over HTTP for a failing test on a given runner and build
+/// Serves the log over HTTP for a failing test on a given runner and build,
+/// and redirects to the source code of a test for a given revision.
 
 import 'dart:async';
 import 'dart:io';
@@ -43,7 +44,7 @@
 <html lang="en">
   <head>
     <meta charset="utf-8">
-    <title>Dart Test Logs</title>
+    <title>Dart Test Logs and Sources</title>
   </head>
   <body>
     <h1>Dart Test Logs</h1>
@@ -61,8 +62,8 @@
     reference.
     <p>URL formats:
     <ul>
-    <li>/test/&lt;revision&gt;/&lt;test-name&gt;
-    <li>/test/cl/&lt;review-id&gt;/&lt;patchset-id&gt;/&lt;test-name&gt;
+    <li>/test/[revision]/[test-name]
+    <li>/test/cl/[review-id]/[patchset-id]/[test-name]
     </ul>
     </p>
     <p>Examples: