iox-#1391 Fix link to license text

Signed-off-by: Marika Lehmann <marika.lehmann@apex.ai>

README.md

@@ -7,7 +7,7 @@
 [![Build & Test](/~https://github.com/eclipse-iceoryx/iceoryx/workflows/Build%20&%20Test/badge.svg?branch=master)](/~https://github.com/eclipse-iceoryx/iceoryx/actions)
 [![Integrationtests](/~https://github.com/eclipse-iceoryx/iceoryx/workflows/Iceoryx%20Integrationtests/badge.svg?branch=master)](/~https://github.com/eclipse-iceoryx/iceoryx/actions)
 [![Gitter](https://badges.gitter.im/eclipse-iceoryx/iceoryx.svg)](https://gitter.im/eclipse/iceoryx)
-[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://www.apache.org/licenses/LICENSE-2.0)
 [![Codecov](https://codecov.io/gh/eclipse-iceoryx/iceoryx/branch/master/graph/badge.svg?branch=master)](https://codecov.io/gh/eclipse-iceoryx/iceoryx?branch=master)
 [![Sanitize](/~https://github.com/eclipse/iceoryx/workflows/Sanitize/badge.svg?branch=master)](/~https://github.com/eclipse/iceoryx/actions?query=workflow%3ASanitize)