correct version number for the certinfo addition

docs/libcurl/curl_easy_setopt.3

@@ -1516,7 +1516,7 @@ this enabled, libcurl (if built with OpenSSL) will extract lots of information
 and data about the certificate's in the certificate chain used in the SSL
 connection. This data is then possible to extract after a transfer using
 \fIcurl_easy_getinfo(3)\fP and its option \fICURLINFO_CERTINFO\fP. (Added in
-7.19.0)
+7.19.1)
 .IP CURLOPT_RANDOM_FILE
 Pass a char * to a zero terminated file name. The file will be used to read
 from to seed the random engine for SSL. The more random the specified file is,