parallels: recommend to connect to vz:///system when connection fails

Though parallels:///system is still accepted we will encourage users
to use vz:///system instead.
Signed-off-by: NMaxim Nestratov <mnestratov@parallels.com>

src/parallels/parallels_driver.c

@@ -316,7 +316,7 @@ parallelsConnectOpen(virConnectPtr conn,
     /* From this point on, the connection is for us. */
     if (!STREQ_NULLABLE(conn->uri->path, "/system")) {
         virReportError(VIR_ERR_INTERNAL_ERROR,
-                       _("Unexpected Parallels URI path '%s', try parallels:///system"),
+                       _("Unexpected Virtuozzo URI path '%s', try vz:///system"),
                        conn->uri->path);
         return VIR_DRV_OPEN_ERROR;
     }