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/Library/DxeSecurityManagementLib/DxeSecurityManagementLib.c

@@ -473,7 +473,7 @@ EFIAPI
 ExecuteSecurity2Handlers (
   IN  UINT32                           AuthenticationOperation,
   IN  UINT32                           AuthenticationStatus,
-  IN  CONST EFI_DEVICE_PATH_PROTOCOL   *File, OPTIONAL
+  IN  CONST EFI_DEVICE_PATH_PROTOCOL   *File  OPTIONAL,
   IN  VOID                             *FileBuffer,
   IN  UINTN                            FileSize,
   IN  BOOLEAN                          BootPolicy