Update the comments in function headers to follow Doxygen special documentation blocks in section 2.3.5.

Signed-off-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Jaben Carsey <Jaben.carsey@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15163 6f19259b-4bc3-4df7-8a09-765794883524

ShellPkg/Application/Shell/ShellParametersProtocol.c

@@ -570,6 +570,10 @@ FixVarName (
 /**
   Remove the unicode file tag from the begining of the file buffer since that will not be
   used by StdIn.
+  
+  @param[in]  Handle    Pointer to the handle of the file to be processed.
+  
+  @retval EFI_SUCCESS   The unicode file tag has been moved successfully.
 **/
 EFI_STATUS
 EFIAPI