bridge: modify configuration file description for restart_timeout

Signed-off-by: Abilio Marques <abiliojr@gmail.com>

mosquitto.conf

@@ -837,7 +837,10 @@
 #start_type automatic
 
 # Set the amount of time a bridge using the automatic start type will wait
-# until attempting to reconnect.  Defaults to 30 seconds.
+# until attempting to reconnect.
+# It can restart on a constant period, or apply a backoff mechanism using
+# “Decorrelated Jitter”, with base and cap values.
+# Defaults to 30 seconds.
 #restart_timeout 30
 
 # Set the amount of time a bridge using the lazy start type must be idle before