docs: ARK CAN node LED meaning

docs/en/dronecan/ark_cannode.md

@@ -89,7 +89,8 @@ On the ARK CANnode, you may need to configure the following parameters:
 
 ## LED Meanings
 
-You will see both red and blue LEDs on the ARK CANnode when it is being flashed, and a solid blue LED if it is running properly.
+- Blinking green is normal operation
+- Rapid blinking blue and red is firmware update
 
 If you see a solid red LED there is an error and you should check the following:
 

docs/en/dronecan/ark_flow.md

@@ -116,7 +116,8 @@ On the ARK Flow, you may need to configure the following parameters:
 
 ## LED Meanings
 
-You will see both red and blue LEDs on the ARK Flow when it is being flashed, and a solid blue LED if it is running properly.
+- Blinking green is normal operation
+- Rapid blinking blue and red is firmware update
 
 If you see a solid red LED there is an error and you should check the following:
 

docs/en/dronecan/ark_flow_mr.md

@@ -111,7 +111,9 @@ You may need to [configure the following parameters](../dronecan/index.md#qgc-ca
 
 ## LED Meanings
 
-You will see both red and blue LEDs on the ARK Flow MR when it is being flashed, and a solid blue LED if it is running properly.
+- Blinking green is normal operation
+- Rapid blinking blue and red is firmware update
+
 
 If you see a solid red LED there is an error and you should check the following:
 

docs/en/dronecan/ark_rtk_gps.md

@@ -139,7 +139,7 @@ Setup via UART:
   - Slow blinking green is waiting for CAN connection
   - Fast blinking green is normal operation
   - Slow blinking green and blue is CAN enumeration
-  - Slow blinking green, blue, and red is firmware update in progress
+  - Fast blinking blue and red is firmware update in progress
   - Blinking red is error
     - If you see a red LED there is an error and you should check the following
       - Make sure the flight controller has an SD card installed