Fixed typo

CLA: trivial
Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>
GH: #8121
(cherry picked from commit 70680262329004c934497040bfc6940072043f48)

doc/man3/RIPEMD160_Init.pod

@@ -13,7 +13,7 @@ RIPEMD-160 hash function
                           unsigned char *md);
 
  int RIPEMD160_Init(RIPEMD160_CTX *c);
- int RIPEMD160_Update(RIPEMD_CTX *c, const void *data, unsigned long len);
+ int RIPEMD160_Update(RIPEMD160_CTX *c, const void *data, unsigned long len);
  int RIPEMD160_Final(unsigned char *md, RIPEMD160_CTX *c);
 
 =head1 DESCRIPTION