[openssl/web] 8e8e8e: Convert all news/*.html to .md

[Richard Levitte]

  Branch: refs/heads/master
  Home:   https://github.openssl.org/openssl/web
  Commit: 8e8e8ef0bbc6e87a805e6cca6e7b8416dab8bf16
      https://github.openssl.org/openssl/web/commit/8e8e8ef0bbc6e87a805e6cca6e7b8416dab8bf16
  Author: Richard Levitte <levitte at openssl.org>
  Date:   2022-07-15 (Fri, 15 Jul 2022)

  Changed paths:
    M .gitignore
    M Makefile
    R news/changelog.html.tt
    A news/changelog.md.tt
    A news/dirdata.yaml
    R news/index.html
    A news/index.md
    R news/newslog.html
    A news/newslog.md
    R news/openssl-notes.html.tt
    A news/openssl-notes.md.tt
    R news/pgpkey.html
    A news/pgpkey.md
    R news/sidebar.shtml
    R news/vulnerabilities.html.tt
    A news/vulnerabilities.md.tt

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

Partial fix of #324

Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/web/pull/346)