Update actions.toml

Co-authored-by: Josue-T <josue@tille.ch>

actions.toml

@@ -24,7 +24,7 @@ name = "Set a user as admin"
 command = "[[ \"$(su --command=\"psql matrix_synapse\" postgres <<< \"UPDATE users SET admin = 1 WHERE name = '@$YNH_ACTION_USERNAME:$(yunohost app setting $YNH_APP_INSTANCE_NAME server_name)'\")\" == 'UPDATE 1' ]]"
 user = "root"
 accepted_return_codes = [0]
-description = "Set a synapse user as admin in the synapse postgreSQL database. It is mainly required to manage the community function."
+description = "Set a synapse user as admin in the synapse server. It is mainly required to manage the community function."
 
     [set_admin_user.arguments]
         [set_admin_user.arguments.username]