Fix system hook example

app/views/admin/hooks/_data_ex.html.erb

 <% data_ex_str = <<eos
 {
-        :before => "95790bf891e76fee5e1747ab589903a6a1f80f22",
-         :after => "da1560886d4f094c3e6c9ef40349f7d38b5d27d7",
-           :ref => "refs/heads/master",
-       :user_id => 4,
-     :user_name => "John Smith",
-    :repository => {
-               :name => "Diaspora",
-                :url => "localhost/diaspora",
-        :description => "",
-           :homepage => "localhost/diaspora",
-            :private => true
-    },
-       :commits => [
-        [0] {
-                   :id => "450d0de7532f8b663b9c5cce183b...",
-              :message => "Update Catalan translation to e38cb41.",
-            :timestamp => "2011-12-12T14:27:31+02:00",
-                  :url => "http://localhost/diaspora/commits/450d0de7532f...",
-               :author => {
-                 :name => "Jordi Mallach",
-                :email => "jordi@softcatala.org"
-            }
-        },
-
-        ....
-
-        [3] {
-                   :id => "da1560886d4f094c3e6c9ef40349...",
-              :message => "fixed readme",
-            :timestamp => "2012-01-03T23:36:29+02:00",
-                  :url => "http://localhost/diaspora/commits/da1560886d...",
-               :author => {
-                 :name => "gitlab dev user",
-                :email => "gitlabdev@dv6700.(none)"
-            }
-        }
-    ],
-   total_commits_count => 3
+   "created_at": "2012-07-21T07:30:54Z",
+   "event_name": "project_create",
+         "name": "StoreCloud",
+  "owner_email": "johnsmith@gmail.com",
+   "owner_name": "John Smith",
+         "path": "storecloud",
+   "project_id": 74 
 }
 eos
 %>