Add links to MP and resolve minor fixes

appengine/swarming/elements/res/imp/taskpage/task-page-demo.html

Index: appengine/swarming/elements/res/imp/taskpage/task-page-demo.html
diff --git a/appengine/swarming/elements/res/imp/taskpage/task-page-demo.html b/appengine/swarming/elements/res/imp/taskpage/task-page-demo.html
index 88c06e8b242b2e1de73688adb176984b4a33e548..1bc57719d0b34fb830c698dd4a7bba5397f9ddc4 100644
--- a/appengine/swarming/elements/res/imp/taskpage/task-page-demo.html
+++ b/appengine/swarming/elements/res/imp/taskpage/task-page-demo.html
@@ -73,6 +73,8 @@
 
     var details = {
       server_version: "1234-deadbeef",
+      milo_prefix: "/res/imp/taskpage/milo-sample.html?",
+      sk_revision_prefix: "https://skia.googlesource.com/skia/+/",
     };
     server.respondWith("GET", /^\/_ah\/api\/swarming\/v1\/server\/details/, JSON.stringify(details));
     server.respondWith("GET", /^\/api\/swarming\/v1\/server\/details/, JSON.stringify(details));
@@ -105,8 +107,7 @@
 
 <task-page
   task_id="abcdef001"
-  client_id="20770472288-t5smpbpjptka4nd888fv0ctd23ftba2o.apps.googleusercontent.com"
-  milo_prefix="/res/imp/taskpage/milo-sample.html?">
+  client_id="20770472288-t5smpbpjptka4nd888fv0ctd23ftba2o.apps.googleusercontent.com">
 </task-page>
 
 </body>