Fix a few more typos

Reviewed-by: Andy Polyakov <appro@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3066)
diff --git a/ssl/statem/statem_clnt.c b/ssl/statem/statem_clnt.c
index 1342272..c6b1641 100644
--- a/ssl/statem/statem_clnt.c
+++ b/ssl/statem/statem_clnt.c
@@ -2978,7 +2978,7 @@
         dgst_nid = NID_id_GostR3411_2012_256;
 
     /*
-     * Get server sertificate PKEY and create ctx from it
+     * Get server certificate PKEY and create ctx from it
      */
     peer_cert = s->session->peer;
     if (!peer_cert) {