Edit docs/configuring-playbook-bridge-hookshot.md: use the common instruction for sending a message for the help menu

Follow docs/configuring-playbook-bridge-postmoogle.md

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

docs/configuring-playbook-bridge-hookshot.md

@@ -60,7 +60,7 @@ To use the bridge, you need to create a room and invite the Hookshot bot (`@hook
 
 Make sure the bot is able to send state events (usually the Moderator power level in clients).
 
-Send a `!hookshot help` message to see a list of help commands.
+Send `!hookshot help` to the room to see the bridge's help menu for additional commands.
 
 Refer to [Hookshot's documentation](https://matrix-org.github.io/matrix-hookshot/latest/usage.html) for more details about using the bridge's various features.