Update README.md - add new reference

Signed-off-by: its-kronos <140297693+its-kronos@users.noreply.github.com>

Author: its-kronos

README.md

@@ -303,6 +303,7 @@ User can add a STM32 based board following this [wiki](https://github.com/stm32d
 | :green_heart:  | STM32F101ZC<br>STM32F101ZD<br>STM32F101ZE | Generic Board | *2.4.0* |  |
 | :green_heart:  | STM32F103C6<br>STM32F103C8<br>STM32F103CB | [Blue Pill](https://stm32-base.org/boards/STM32F103C8T6-Blue-Pill) | *1.2.0* | USB CDC support since *1.5.0*<br> Maple bootloaders support since *1.6.0* |
 | :green_heart:  | STM32F103C8<br>STM32F103CB | [Black Pill](https://stm32-base.org/boards/STM32F103C8T6-Black-Pill) | *1.5.0* |  |
+| :yellow_heart:  | STM32F103C8 | [Databoard](https://github.com/its-kronos/Databoard) |  |  |
 | :green_heart:  | STM32F103C4<br>STM32F103C6<br>STM32F103C8<br>STM32F103CB | Generic Board | *1.9.0* |  |
 | :green_heart:  | STM32F103R8<br>STM32F103RB<br>STM32F103RC<br>STM32F103RE | [Blue Button F103Rx](https://stm32-base.org/boards/STM32F103RET6-Generic-Board) | *1.9.0* |  |
 | :green_heart:  | STM32F103R6<br>STM32F103R8<br>STM32F103RB<br>STM32F103RC<br>STM32F103RD<br>STM32F103RE<br>STM32F103RF<br>STM32F103RG | Generic Board | *1.9.0* |  |