SecurityPkg: 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: Jian J Wang <jian.j.wang@intel.com>

SecurityPkg/Library/Tpm2CommandLib/Tpm2Help.c

@@ -84,7 +84,7 @@ GetHashMaskFromAlgo (
 UINT32
 EFIAPI
 CopyAuthSessionCommand (
-  IN      TPMS_AUTH_COMMAND         *AuthSessionIn, OPTIONAL
+  IN      TPMS_AUTH_COMMAND         *AuthSessionIn  OPTIONAL,
   OUT     UINT8                     *AuthSessionOut
   )
 {