[openssl/web] 76c956: Actually use FUTURESIERIES where it's supposed to.

[Richard Levitte]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/web
  Commit: 76c956397d2424e5b6d1b33a6e4e6d326221b31a
      https://github.com/openssl/web/commit/76c956397d2424e5b6d1b33a6e4e6d326221b31a
  Author: Richard Levitte <levitte at openssl.org>
  Date:   2023-10-26 (Thu, 26 Oct 2023)

  Changed paths:
    M Makefile

  Log Message:
  -----------
  Actually use FUTURESIERIES where it's supposed to.

It's currently only used for source listing...