Fix typo `DBusInteracesMap` -> `DBusInterfacesMap`

Change-Id: I9a851076eccee9d79ad7bb036e58b717e06ad5d1
Signed-off-by: Michael Shen <gpgpgp@google.com>
diff --git a/redfish-core/lib/certificate_service.hpp b/redfish-core/lib/certificate_service.hpp
index 0073bc9..2fd6b96 100644
--- a/redfish-core/lib/certificate_service.hpp
+++ b/redfish-core/lib/certificate_service.hpp
@@ -819,7 +819,7 @@
             return;
         }
 
-        dbus::utility::DBusInteracesMap interfacesProperties;
+        dbus::utility::DBusInterfacesMap interfacesProperties;
 
         sdbusplus::message::object_path csrObjectPath;
         m.read(csrObjectPath, interfacesProperties);