Correct URL

README.md

@@ -5,7 +5,7 @@
   <a href="https://ci.codingworkshop.eu.org/xt-sys/xtchain">
     <img alt="Build Status" src="https://ci.codingworkshop.eu.org/api/badges/xt-sys/xtchain/status.svg">
   </a>
-  <a href="https://git.codingworkshop.eu.org/xt-sys/exectos/src/branch/master/COPYING.md">
+  <a href="https://git.codingworkshop.eu.org/xt-sys/xtchain/src/branch/master/COPYING.md">
     <img alt="License" src="https://img.shields.io/badge/License-GPLv3-blue.svg">
   </a>
   <a href="https://github.com/sponsors/xt-sys/">