ipmid: Change .H -> .hpp

Change-Id: Ia1ed05a533736105909717b86f16274b30d36401
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/transporthandler.cpp b/transporthandler.cpp
index 5bb5355..0739d06 100644
--- a/transporthandler.cpp
+++ b/transporthandler.cpp
@@ -5,7 +5,7 @@
 #include <string>
 
 #include "ipmid-api.h"
-#include "ipmid.H"
+#include "ipmid.hpp"
 #include "transporthandler.h"
 
 #define SYSTEMD_NETWORKD_DBUS 1