Fix warnings installing pod files

Fixes some links in the pod files
Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

doc/crypto/BIO_meth_new.pod

@@ -75,7 +75,7 @@ called in response to the application calling BIO_puts(). The parameters for
 the function have the same meaning as for BIO_puts().
 
 BIO_meth_get_gets() and BIO_meth_set_gets() get and set the function typically
-used for reading a line of data from the BIO respectively (see the L<BIO_gets>
+used for reading a line of data from the BIO respectively (see the L<BIO_gets(3)>
 page for more information). This function will be called in response to the
 application calling BIO_gets(). The parameters for the function have the same
 meaning as for BIO_gets().
@@ -102,7 +102,7 @@ this function.
 
 BIO_meth_get_callback_ctrl() and BIO_meth_set_callback_ctrl() get and set the
 function used for processing callback ctrl messages in the BIO respectively. See
-the L<BIO_callback_ctrl> page for more information. This function will be called
+the L<BIO_callback_ctrl(3)> page for more information. This function will be called
 in response to the application calling BIO_callback_ctrl(). The parameters for
 the function have the same meaning as for BIO_callback_ctrl().
 

doc/crypto/DSA_meth_new.pod

@@ -174,7 +174,7 @@ DSA_meth_set1_name() and all DSA_meth_set_*() functions return 1 on success or
 =head1 SEE ALSO
 
 L<dsa(3)>, L<DSA_new(3)>, L<DSA_generate_parameters(3)>, L<DSA_generate_key(3)>,
-L<DSA_dup_DH(3)>, L<DSA_do_sign(3)>, L<DSA_set_method(3)>, L<DSA_SIG_new3)>,
+L<DSA_dup_DH(3)>, L<DSA_do_sign(3)>, L<DSA_set_method(3)>, L<DSA_SIG_new(3)>,
 L<DSA_sign(3)>, L<DSA_size(3)>, L<DSA_get0_pqg(3)>
 
 =head1 HISTORY