Renesas/readme.md: Fix incorrect link to quickstarts.

Update following readme.md files:
 * Renesas/RSK_RX65N_2MB/readme.md
 * Renesas/RX65N_Cloud_Kit/readme.md

Signed-off-by: Takeo Takahashi <[email protected]>

Author: TakeoTakahashi2020

Renesas/RSK_RX65N_2MB/readme.md

@@ -17,7 +17,7 @@ products:
 
 The **Quickstart** button above provides the complete steps for creating an IoT Central application and then configuring, building and flashing the device.
 
-For guidance on connecting additional devices, see the [Embedded device quickstarts](https://docs.microsoft.com/azure/iot-develop/quickstart-devkit-mxchip-az3166).
+For guidance on connecting additional devices, see the [Embedded device quickstarts](https://docs.microsoft.com/azure/iot-develop/quickstart-devkit-renesas-rx65n-2mb).
 
 ## What you need
 

Renesas/RX65N_Cloud_Kit/readme.md

@@ -17,7 +17,7 @@ products:
 
 The **Quickstart** button above provides the complete steps for creating an IoT Central application and then configuring, building and flashing the device.
 
-For guidance on connecting additional devices, see the [Embedded device quickstarts](https://docs.microsoft.com/azure/iot-develop/quickstart-devkit-mxchip-az3166).
+For guidance on connecting additional devices, see the [Embedded device quickstarts](https://docs.microsoft.com/azure/iot-develop/quickstart-devkit-renesas-rx65n-cloud-kit).
 
 ## What you need