Fix host entry

source/_components/device_tracker.owntracks_http.markdown

@@ -30,7 +30,7 @@ For configuration options and usage instructions, read the documentation for the
 Open OwnTracks and go to Connection preferences:
 
  - Mode: Private HTTP
- - Host: <Home Assistant url>/api/owntracks/<your name>/<device name>
+ - Host: [Home Assistant URL]:[port]/api/owntracks/[your name]/[device name]
  - Identification: turn authentication on, username `homeassistant` and password is your API password that you use to login to Home Assistant.
 
 Host example: If I host my Home Assistant at `https://example.duckdns.org`, my name is Paulus and my phone is a Pixel I would set the host to be `https://example.duckdns.org/api/owntracks/paulus/pixel`. This will result in an entity with an ID of `device_tracker.paulus_pixel`. You can pick any name for the user and the device.