Update README.md

Author: BornaBiro

README.md

@@ -3,7 +3,7 @@
 [![Compile Sketches](https://github.com/e-radionicacom/Inkplate-Arduino-library/actions/workflows/compile.yml/badge.svg?branch=master)](https://github.com/e-radionicacom/Inkplate-Arduino-library/actions/workflows/compile.yml)
 
 <p align="center">
-  <img src="https://raw.githubusercontent.com/SolderedElectronics/Inkplate-Arduino-library/dev/extras/InkplateImage.jpg">
+  <img src="https://raw.githubusercontent.com/SolderedElectronics/Inkplate-Arduino-library/master/extras/InkplateImage.jpg">
 </p>
 
 Arduino library for all-in-one e-paper display family named Inkplate can be found in this repo. Inkplate is a series of powerful, Wi-Fi and Bluetooth enabled, ESP32 based e-paper display products. Its main feature is simplicity. Just plug in a USB cable, open Arduino IDE, and change the contents of the screen with few lines of code. Inkplate family currently includes Inkplate 10, Inkplate 6 and Inkplate 6PLUS, Inkplate 6COLOR and Inkplate 2.