Update content of ResourceNotFound/ResourceAlreadyExists message

According to Redfish Base Message Registry definition [1], the first
argument of ResourceNotFound and ResourceAlreadyExists is the schema
name of the resource. This patch changes the first argument to non-
versioned schema name treewide.

Tested:
Verified the error message matches the definition, and Redfish Service
Validator passed.

[1] https://redfish.dmtf.org/registries/Base.1.13.0.json

Change-Id: Ib5cd853578ef0bffda1184d10827241e94faaf68
Signed-off-by: Jiaqing Zhao <jiaqing.zhao@intel.com>
diff --git a/redfish-core/lib/task.hpp b/redfish-core/lib/task.hpp
index 08573d5..b40d522 100644
--- a/redfish-core/lib/task.hpp
+++ b/redfish-core/lib/task.hpp
@@ -342,14 +342,14 @@
 
         if (find == task::tasks.end())
         {
-            messages::resourceNotFound(asyncResp->res, "Monitor", strParam);
+            messages::resourceNotFound(asyncResp->res, "Task", strParam);
             return;
         }
         std::shared_ptr<task::TaskData>& ptr = *find;
         // monitor expires after 204
         if (ptr->gave204)
         {
-            messages::resourceNotFound(asyncResp->res, "Monitor", strParam);
+            messages::resourceNotFound(asyncResp->res, "Task", strParam);
             return;
         }
         ptr->populateResp(asyncResp->res);
@@ -383,7 +383,7 @@
 
         if (find == task::tasks.end())
         {
-            messages::resourceNotFound(asyncResp->res, "Tasks", strParam);
+            messages::resourceNotFound(asyncResp->res, "Task", strParam);
             return;
         }