docs: Fixed HA redirect

Author: BottlecapDave

_docs/setup/data_source.md

@@ -1,6 +1,6 @@
 # Data source
 
-Data sources help group target timeframe sensors together to be fed from a central data source. These data sources take a specific shape, but can represent anything. To start configuring target timeframe sensors, you'll need to create an initial data source. This can be done via the [integration UI](https://my.home-assistant.io/redirect/config_flow_start/?domain=target_timeframe).
+Data sources help group target timeframe sensors together to be fed from a central data source. These data sources take a specific shape, but can represent anything. To start configuring target timeframe sensors, you'll need to create an initial data source. This can be done via the [integration UI](https://my.home-assistant.io/redirect/config_flow_start/?domain=target_timeframes).
 
 ## Properties