doc: correct the example of rib add command

Network prefix is required rather than just IP.

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/sources/cli-command-syntax.md b/docs/sources/cli-command-syntax.md
index c7573170..90c3c5dd 100644
--- a/docs/sources/cli-command-syntax.md
+++ b/docs/sources/cli-command-syntax.md
@@ -33,7 +33,7 @@ gobgp has six subcommands.
 #### - example
 If you want to add routes with the address of the ipv4 to global rib：
 ```shell
-% gobgp global rib add 10.33.0.0 -a ipv4
+% gobgp global rib add 10.33.0.0/16 -a ipv4
 ```
 If you want to remove routes with the address of the ipv6 from global rib：
 ```shell