doc: fix macro name
OSSL_STORE_INFO_X509 doesn't exist.  It should be OSSL_STORE_INFO_CERT.
Fixes
@@ -58,7 +58,7 @@ other encoding is undefined.
* here just one example
*/
switch (OSSL_STORE_INFO_get_type(info)) {
- case OSSL_STORE_INFO_X509:
+ case OSSL_STORE_INFO_CERT:
/* Print the X.509 certificate text */
X509_print_fp(stdout, OSSL_STORE_INFO_get0_CERT(info));
/* Print the X.509 certificate PEM output */
