Update docs/configuring-playbook-bridge-wechat.md: fix the service name

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

docs/configuring-playbook-bridge-wechat.md

@@ -47,7 +47,7 @@ Send `help` to the bot to see the available commands.
 
 ## Troubleshooting
 
-As with all other services, you can find the logs in [systemd-journald](https://www.freedesktop.org/software/systemd/man/systemd-journald.service.html) by logging in to the server with SSH and running `journalctl -fu matrix-bridge-wechat`.
+As with all other services, you can find the logs in [systemd-journald](https://www.freedesktop.org/software/systemd/man/systemd-journald.service.html) by logging in to the server with SSH and running `journalctl -fu matrix-wechat`.
 
 ### Increase logging verbosity