updated generated content

Signed-off-by: Kai Kreuzer <kai@openhab.org>

_bindings/nikohomecontrol/readme.md

@@ -5,6 +5,7 @@ title: Niko Home Control - Bindings
 type: binding
 description: "The Niko Home Control binding integrates with a [Niko Home Control](http://www.nikohomecontrol.be/) system through a Niko Home Control IP-interface."
 since: 2x
+logo: images/addons/nikohomecontrol.png
 install: auto
 ---
 

_bindings/onebusaway/readme.md

@@ -5,6 +5,7 @@ title: OneBusAway - Bindings
 type: binding
 description: "[OneBusAway](https://onebusaway.org/) is an open source, real-time, transit-information service.  This binding allows you to get events based on transit arrival and departures, so you can create rules to do something based on that data."
 since: 2x
+logo: images/addons/onebusaway.png
 install: auto
 ---
 

_bindings/zigbee/readme.md

@@ -5,6 +5,7 @@ title: ZigBee - Bindings
 type: binding
 description: "The ZigBee binding supports an interface to a wireless ZigBee home automation network."
 since: 2x
+logo: images/addons/zigbee.png
 install: auto
 ---