Fix typo in collection.hpp

Commit https://gerrit.openbmc.org/c/openbmc/bmcweb/+/64087 has a typo
in redfish-core/include/utils/collection.hpp

```
L33:
  jsonCountKeyName /= back + "@data.count";
-->
  jsonCountKeyName /= back + "@odata.count";
```

Tested:
- Validator passes

Change-Id: Ied52944bd43ec5080c4eef141813674bab1cc0b4
Signed-off-by: Myung Bae <myungbae@us.ibm.com>
diff --git a/redfish-core/include/utils/collection.hpp b/redfish-core/include/utils/collection.hpp
index 79e4fc0..2e5563b 100644
--- a/redfish-core/include/utils/collection.hpp
+++ b/redfish-core/include/utils/collection.hpp
@@ -30,7 +30,7 @@
     nlohmann::json::json_pointer jsonCountKeyName = jsonKeyName;
     std::string back = jsonCountKeyName.back();
     jsonCountKeyName.pop_back();
-    jsonCountKeyName /= back + "@data.count";
+    jsonCountKeyName /= back + "@odata.count";
 
     if (ec == boost::system::errc::io_error)
     {