fix broken link and modify docu

README.md

@@ -31,15 +31,24 @@ This tutorial is structured in multiple sequential chapters. Be sure to read [Ap
 
 - You have access to the [web IDE](https://axcite.me)
 - You can login into the AX registry
-- Your AX cloud IDE public key is added in your GitHub profile:
-  - [how to get your public key from AX](https://console.prod.ax.siemens.cloud/docs/axcode/source-code-management#cloning-in-the-cloud)
+- Your `public SSH key` from AX is added to your GitHub profile:
+  - [how to get your public SSH key from AX](#how-to-get-a-your-public-ssh-key-from-ax)
   - [how to add a SSH key on GitHub](https://docs.github.com/en/authentication/connecting-to-github-with-ssh/adding-a-new-ssh-key-to-your-github-account)
   - >Note: you need this public key to be able to clone the repository in the cloud IDE
 
 - You've created a valid personal access token to access the GitHub registry
   - [create personal access token on GitHub](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-personal-access-token)
   - >Note: You need this token to login into the `simatic-ax` GitHub registry (URL: <https://npm.pkg.github.com/>) with `apax login`
 
+## How to get a your public SSH key from AX
+
+- open the [workspace manager](https://console.simatic-ax.siemens.io/workspaces) in AX
+- Click on the button `Copy public key` 
+
+    ![](./doc/images/publickey.png)
+
+- [further documentation](https://console.simatic-ax.siemens.io/docs/axcode/source-code-management#cloning-in-the-cloud)
+
 ## Contribution
 
 Thanks for your interest in contributing. Anybody is free to report bugs, unclear documentation, and other problems regarding this repository in the Issues section or, even better, propose any changes to this repository using Pull Requests.