Redfish: Fix issue of EventDestination

Fix the bug that can't get/patch/delete EventDestination

Tested: It works good and validation has succeeded.

Signed-off-by: Chicago Duan <duanzhijia01@inspur.com>
Change-Id: Ideb743f9f2a7900a444bc912bfedbb75dfe7c8e7
diff --git a/redfish-core/lib/event_service.hpp b/redfish-core/lib/event_service.hpp
index 367b6a2..abc21ec 100644
--- a/redfish-core/lib/event_service.hpp
+++ b/redfish-core/lib/event_service.hpp
@@ -483,7 +483,7 @@
 
 inline void requestRoutesEventDestination(App& app)
 {
-    BMCWEB_ROUTE(app, "redfish/v1/EventService/Subscriptions/<str>/")
+    BMCWEB_ROUTE(app, "/redfish/v1/EventService/Subscriptions/<str>/")
         .privileges({"Login"})
         .methods(boost::beast::http::verb::get)(
             [](const crow::Request&,
@@ -535,7 +535,7 @@
             });
     /////redfish/v1/EventService/Subscriptions/
     // ConfigureManager
-    BMCWEB_ROUTE(app, "redfish/v1/EventService/Subscriptions/<str>/")
+    BMCWEB_ROUTE(app, "/redfish/v1/EventService/Subscriptions/<str>/")
         .privileges({"ConfigureManager"})
         .methods(boost::beast::http::verb::patch)(
             [](const crow::Request& req,
@@ -588,7 +588,7 @@
 
                 EventServiceManager::getInstance().updateSubscriptionData();
             });
-    BMCWEB_ROUTE(app, "redfish/v1/EventService/Subscriptions/<str>/")
+    BMCWEB_ROUTE(app, "/redfish/v1/EventService/Subscriptions/<str>/")
         .privileges({"ConfigureManager"})
         .methods(boost::beast::http::verb::delete_)(
             [](const crow::Request&,