Update forecasts.md

Not sure how solar.forecast is implemented in EMHASS, but actually the free tier is 12 API calls per hour, not per day.
So, depending on the implementation, feel free to reject this PR.
Cheers!

docs/forecasts.md

@@ -38,7 +38,7 @@ For example:
 curl -i -H "Content-Type:application/json" -X POST -d '{"solcast_rooftop_id":"<your_system_id>","solcast_api_key":"<your_secret_api_key>"}' http://localhost:5000/action/dayahead-optim
 ```
 
-A third method uses the Solar.Forecast service. You will need to set `method=solar.forecast` and use just one parameter `solar_forecast_kwp` (the PV peak installed power in kW) that should be passed at runtime. This will be using the free public Solar.Forecast account with 12 API requests per day and 1h data resolution. As with SolCast, there are paid account services that may results in better forecasts.
+A third method uses the Solar.Forecast service. You will need to set `method=solar.forecast` and use just one parameter `solar_forecast_kwp` (the PV peak installed power in kW) that should be passed at runtime. This will be using the free public Solar.Forecast account with 12 API requests per hour, per IP, and 1h data resolution. As with SolCast, there are paid account services that may results in better forecasts.
 
 For example, for a 5 kWp installation:
 ```