doc error of alert manager configuration example (for the route，mute parts)

[kramerli]

https://prometheus.io/docs/alerting/latest/configuration/#route

# Times when the route should be muted. These must match the name of a
# mute time interval defined in the mute_time_intervals section.
# Additionally, the root node cannot have any mute times.
# When a route is muted it will not send any notifications, but
# otherwise acts normally (including ending the route-matching process
# if the `continue` option is not set.)
mute_time_intervals:
  [ - [<string>](https://prometheus.io/docs/alerting/latest/configuration/#string) ...]

The "These must match the name of a mute time interval defined in the mute_time_intervals section". It should be time_intervals section