downloader: Fix dead link in API documentation

panda/src/downloader/httpClient.I

@@ -111,9 +111,9 @@ get_verify_ssl() const {
  * Specifies the set of ciphers that are to be made available for SSL
  * connections.  This is a string as described in the ciphers(1) man page of
  * the OpenSSL documentation (or see
- * https://www.openssl.org/docs/apps/ciphers.html ).  If this isn't specified,
- * the default is provided by the Config file.  You may also specify "DEFAULT"
- * to use the built-in OpenSSL default value.
+ * https://www.openssl.org/docs/man1.1.1/man1/ciphers.html ).  If this isn't
+ * specified, the default is provided by the Config file.  You may also specify
+ * "DEFAULT" to use the built-in OpenSSL default value.
  */
 INLINE void HTTPClient::
 set_cipher_list(const std::string &cipher_list) {