Man pages matching name evp_pkey_ctx_set_tls1_prf_md in section 3ssl:

EVP_PKEY_CTX_set_tls1_prf_md.3ssl.en	debian 10 / libssl-doc
EVP_PKEY_CTX_set_tls1_prf_md.3ssl.en	debian 11 / libssl-doc
EVP_PKEY_CTX_set_tls1_prf_md.3ssl.en	debian 12 / libssl-doc