Update 1-source_sensor.md

documentation/1-source_sensor.md

@@ -1,6 +1,6 @@
 # 1. SOURCE SENSOR
 
-These parameters are used to determine where the source data can be found. If you use the [Nordpool integration](https://github.com/custom-components/nordpool), or an integration which uses the same attributes, you don't need to provide any of the parameters, but it is advised to provide the `sensor` as it will be more resource friendly if the macro doesn't need to search for it.
+These parameters are used to determine where the source data can be found. If you use the custom [Nordpool integration](https://github.com/custom-components/nordpool) (can be downloaded using HACS), or an integration which uses the same attributes, you don't need to provide any of the parameters, but it is advised to provide the `sensor` as it will be more resource friendly if the macro doesn't need to search for it.
 
 ## 🚨 IMPORTANT NOTES 🚨
 * It is advised to provice all parameters if they don't match the defaults. Although the macro will search for the attributes and keys, it is more resource friendly if they are already provided.