use quotes for local headers

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: I95f247bd17cffab8b9ef3337f48336f8d7059c2d
diff --git a/src/PSUEvent.cpp b/src/PSUEvent.cpp
index cc7374c..d40dc54 100644
--- a/src/PSUEvent.cpp
+++ b/src/PSUEvent.cpp
@@ -14,9 +14,10 @@
 // limitations under the License.
 */
 
+#include "PSUEvent.hpp"
+
 #include <systemd/sd-journal.h>
 
-#include <PSUEvent.hpp>
 #include <iostream>
 #include <sdbusplus/asio/connection.hpp>
 #include <sdbusplus/asio/object_server.hpp>