Updated README.md

README.md

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 [![Release](https://img.shields.io/github/v/release/rei-vilo/PDLS_EXT3_Basic_Global)](https://github.com/rei-vilo/PDLS_EXT3_Basic_Global/releases) [![Codacy Badge](https://app.codacy.com/project/badge/Grade/77ecc9fa99834e299505f5f2a7c83e53)](https://app.codacy.com/gh/rei-vilo/PDLS_EXT3_Basic_Global/dashboard?utm_source=github.com&utm_medium=referral&utm_content=rei-vilo/PDLS_EXT3_Basic_Global&utm_campaign=Badge_Grade) ![Arduino lint](https://github.com/rei-vilo/PDLS_EXT3_Basic_Global/actions/workflows/main.yml/badge.svg) [![GitHub issues](https://img.shields.io/github/issues/rei-vilo/PDLS_EXT3_Basic_Global)](https://github.com/rei-vilo/PDLS_EXT3_Basic_Global/issues)
 
-[![](https://img.shields.io/badge/-Wiki-orange)](https://docs.pervasivedisplays.com/) [![](https://img.shields.io/badge/-User_Guide-orange)](https://pdls.pervasivedisplays.com/userguide/index.html) [![](https://img.shields.io/badge/-Reference_manual-orange)](https://rei-vilo.github.io/PDLS_EXT3_Basic_Documentation/html/index.html)
+[![](https://img.shields.io/badge/-Wiki-blue)](https://docs.pervasivedisplays.com/) [![](https://img.shields.io/badge/-User_Guide-blue)](https://pdls.pervasivedisplays.com/userguide/index.html) [![](https://img.shields.io/badge/-Reference_manual-blue)](https://rei-vilo.github.io/PDLS_EXT3_Basic_Documentation/html/index.html)
 
 The Pervasive Displays Library Suite is specifically designed for the [Pervasive Displays](https://www.pervasivedisplays.com) e-paper screens, extension boards and evaluation kits.