Update nuki.markdown (home-assistant#12089)

During Bridge setup it is possible on iOS app activate HTTP API and edit token.

source/_integrations/nuki.markdown

@@ -12,7 +12,7 @@ ha_codeowners:
 
 The `nuki` platform allows you to control [Nuki Smart Locks](https://nuki.io/en/smart-lock/) via either a [software bridge](https://play.google.com/store/apps/details?id=io.nuki.bridge) or a [physical bridge](https://nuki.io/en/bridge/).
 
-To add a Nuki bridge to your installation, you need to enable developer mode on your bridge and define a port and an access token. This can be achieved using the [Android app](https://play.google.com/store/apps/details?id=io.nuki). Please note that the API token should be 6-20 characters long, even though the app allows you to set a longer one.
+To add a Nuki bridge to your installation, you need to enable developer mode on your bridge and define a port and an access token. This can be achieved using the [Android app](https://play.google.com/store/apps/details?id=io.nuki) or [iPhone app](https://apps.apple.com/app/nuki-smart-lock/id1044998081). Please note that the API token should be 6-20 characters long, even though the app allows you to set a longer one.
 Then add the following to your `configuration.yaml` file:
 
 ```yaml