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/SmmReportStatusCodeLib/ReportStatusCodeLibTraditional.c

@@ -30,7 +30,7 @@
 EFI_STATUS
 InternalLocateProtocol (
   IN  EFI_GUID  *Protocol,
-  IN  VOID      *Registration, OPTIONAL
+  IN  VOID      *Registration  OPTIONAL,
   OUT VOID      **Interface
   )
 {