Add wisGate OS image link

Fix logo essentials

Author: marqdevx

content/hardware/04.pro/miscellaneous/wisgate-edge-lite-2/essentials.md

@@ -2,4 +2,9 @@
     <EssentialElement title="Quickstart Guide" type="getting-started" link="/tutorials/wisgate-edge-lite-2/getting-started">
         A quick guide to setup and configure the device.
     </EssentialElement>
+</EssentialsColumn>
+<EssentialsColumn title="WisGate Arduino OS">
+    <EssentialElement title="Latest WisGate Arduino OS image" type="file-icon" link="https://content.arduino.cc/assets/WisGateOS_2.0.1_ARDUINO_RAK.zip">
+        Get the latest OS for your gateways, compatible with both WisGate Edge Lite 2 and WisGate Edge Pro.
+    </EssentialElement>
 </EssentialsColumn>

content/hardware/04.pro/miscellaneous/wisgate-edge-pro/essentials.md

@@ -5,4 +5,9 @@
     <EssentialElement title="Outdoors mounting" type="getting-started" link="/tutorials/wisgate-edge-pro/pole-mounting">
         Install the device on an outdoors antenna pole.
     </EssentialElement>
+</EssentialsColumn>
+<EssentialsColumn title="WisGate Arduino OS">
+    <EssentialElement title="Latest WisGate Arduino OS image" type="file-icon" link="https://content.arduino.cc/assets/WisGateOS_2.0.1_ARDUINO_RAK.zip">
+        Get the latest OS for your gateways, compatible with both WisGate Edge Lite 2 and WisGate Edge Pro.
+    </EssentialElement>
 </EssentialsColumn>