[openssl/openssl] 4724c8: rsa-doc: fix typo

[James Muir]

  Branch: refs/heads/openssl-3.0
  Home:   https://github.com/openssl/openssl
  Commit: 4724c823ef3453eaf95e9d84075e5f191035541a
      https://github.com/openssl/openssl/commit/4724c823ef3453eaf95e9d84075e5f191035541a
  Author: James Muir <james at openssl.org>
  Date:   2023-12-01 (Fri, 01 Dec 2023)

  Changed paths:
    M doc/man7/EVP_PKEY-RSA.pod

  Log Message:
  -----------
  rsa-doc: fix typo

"d_i in RFC8017" -> "d_i" in RFC8017

Reviewed-by: Todd Short <todd.short at me.com>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22868)

(cherry picked from commit c89b553bdc2587b483f38aa1ab2b142cc078343d)