Update derivative docs for a new total_increasing handling (#33152)

source/_integrations/derivative.markdown

@@ -21,7 +21,7 @@ ha_integration_type: helper
 The derivative ([Wikipedia](https://en.wikipedia.org/wiki/Derivative)) integration creates a sensor that estimates the derivative of the
 values provided by another sensor (the **source sensor**). Derivative sensors are updated upon changes of the **source sensor**.
 
-For sensors that reset to zero after a power interruption and need a "non-negative derivative", such as bandwidth counters in routers, or rain gauges, consider using the [Utility Meter](/integrations/utility_meter/) integration instead. Otherwise, each reset will register a significant change in the derivative sensor.
+For sensors that reset to zero after a power interruption and need a "non-negative derivative", such as bandwidth counters in routers, or rain gauges, you can now use this integration directly. Ensure that the input sensor has a `total_increasing` state class, as this is necessary for the integration to handle resets correctly without registering significant changes in the derivative sensor.
 
 {% include integrations/config_flow.md %}
 {% configuration_basic %}