[openssl/web] d67adb: Convert all support/*.html to .md

[Richard Levitte]

  Branch: refs/heads/master
  Home:   https://github.openssl.org/openssl/web
  Commit: d67adbc36d08632a76cec73e2145caa0e3374049
      https://github.openssl.org/openssl/web/commit/d67adbc36d08632a76cec73e2145caa0e3374049
  Author: Richard Levitte <levitte at openssl.org>
  Date:   2022-07-15 (Fri, 15 Jul 2022)

  Changed paths:
    M .gitignore
    M Makefile
    R support/acks.html
    A support/acks.md
    R support/contracts.html
    A support/contracts.md
    A support/dirdata.yaml
    R support/donations.html
    A support/donations.md
    R support/index.html
    A support/index.md
    R support/sidebar.shtml

  Log Message:
  -----------
  Convert all support/*.html to .md

Partial fix of #324

Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/web/pull/348)