MdeModulePkg: Change OPTIONAL keyword usage style

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3760

Update all use of ', OPTIONAL' to ' OPTIONAL,' for function params.

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael Kubacki <michael.kubacki@microsoft.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>

MdeModulePkg/Include/Library/OemHookStatusCodeLib.h

@@ -65,9 +65,8 @@ OemHookStatusCodeReport (
   IN EFI_STATUS_CODE_TYPE     CodeType,
   IN EFI_STATUS_CODE_VALUE    Value,
   IN UINT32                   Instance,
-  IN EFI_GUID                 *CallerId, OPTIONAL
+  IN EFI_GUID                 *CallerId  OPTIONAL,
   IN EFI_STATUS_CODE_DATA     *Data      OPTIONAL
   );
 
 #endif // __OEM_HOOK_STATUSCODE_LIB__
-