Rearrange code examples in docs for clarity

The introduction of a deprecation notice between the header include
line and the function prototypes left the inclusion in the previous
block.  Move the #include to after the deprecation notice to ensure
that the headers is included together with the corresponding MDX_y*
functions.

Author: danielgustafsson

doc/man3/MD5.pod

@@ -7,38 +7,37 @@ MD4_Final, MD5_Init, MD5_Update, MD5_Final - MD2, MD4, and MD5 hash functions
 
 =head1 SYNOPSIS
 
- #include <openssl/md2.h>
-
 The following functions have been deprecated since OpenSSL 3.0, and can be
 hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value,
 see L<openssl_user_macros(7)>:
 
+ #include <openssl/md2.h>
+
  unsigned char *MD2(const unsigned char *d, unsigned long n, unsigned char *md);
 
  int MD2_Init(MD2_CTX *c);
  int MD2_Update(MD2_CTX *c, const unsigned char *data, unsigned long len);
  int MD2_Final(unsigned char *md, MD2_CTX *c);
 
 
- #include <openssl/md4.h>
-
 The following functions have been deprecated since OpenSSL 3.0, and can be
 hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value,
 see L<openssl_user_macros(7)>:
 
+ #include <openssl/md4.h>
+
  unsigned char *MD4(const unsigned char *d, unsigned long n, unsigned char *md);
 
  int MD4_Init(MD4_CTX *c);
  int MD4_Update(MD4_CTX *c, const void *data, unsigned long len);
  int MD4_Final(unsigned char *md, MD4_CTX *c);
 
-
- #include <openssl/md5.h>
-
 The following functions have been deprecated since OpenSSL 3.0, and can be
 hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value,
 see L<openssl_user_macros(7)>:
 
+ #include <openssl/md5.h>
+
  unsigned char *MD5(const unsigned char *d, unsigned long n, unsigned char *md);
 
  int MD5_Init(MD5_CTX *c);