fixing errors found in code review.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9450 6f19259b-4bc3-4df7-8a09-765794883524

ShellPkg/Include/Protocol/EfiShellParameters.h

@@ -21,10 +21,35 @@
   }
 
 typedef struct _EFI_SHELL_PARAMETERS_PROTOCOL {
+///
+/// Points to an Argc-element array of points to null-terminated strings containing
+/// the command-line parameters. The first entry in the array is always the full file
+/// path of the executable. Any quotation marks that were used to preserve
+/// whitespace have been removed.
+///
   CHAR16 **Argv;
+
+///
+/// The number of elements in the Argv array.
+/// 
   UINTN Argc;
+
+///
+/// The file handle for the standard input for this executable. This may be different
+/// from the ConInHandle in the EFI_SYSTEM_TABLE.
+///
   EFI_FILE_HANDLE StdIn;
+
+///
+/// The file handle for the standard output for this executable. This may be different
+/// from the ConOutHandle in the EFI_SYSTEM_TABLE.
+///
   EFI_FILE_HANDLE StdOut;
+
+///
+/// The file handle for the standard error output for this executable. This may be
+/// different from the StdErrHandle in the EFI_SYSTEM_TABLE.
+///
   EFI_FILE_HANDLE StdErr;
 } EFI_SHELL_PARAMETERS_PROTOCOL;