Fix manpage problems

CLA: trivial
Reviewed-by: NKurt Roeckx <kurt@roeckx.be>
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>
GH: #6472

doc/man3/BUF_MEM_new.pod

@@ -6,8 +6,6 @@ BUF_MEM_new, BUF_MEM_new_ex, BUF_MEM_free, BUF_MEM_grow,
 BUF_MEM_grow_clean, BUF_reverse
 - simple character array structure
 
-standard C library equivalents
-
 =head1 SYNOPSIS
 
  #include <openssl/buffer.h>

doc/man3/SSL_get_current_cipher.pod

@@ -15,7 +15,7 @@ SSL_get_pending_cipher - get SSL_CIPHER of a connection
 
  const char *SSL_get_cipher_name(const SSL *s);
  const char *SSL_get_cipher(const SSL *s);
- int SSL_get_cipher_bits(const SSL *s, int *np) \
+ int SSL_get_cipher_bits(const SSL *s, int *np);
  const char *SSL_get_cipher_version(const SSL *s);
 
 =head1 DESCRIPTION