Update README.md

Author: krystophny

README.md

@@ -16,8 +16,9 @@ CODE is based around our standard Debian bookworm system at ITPcp and provides
 
 ## Getting Started
 
-If you haven't done so earlier, set up your SSH keys in `~/.ssh` via `ssh-keygen` and
-add the content of `id_rsa.pub` to Gitlab and GitHub for authentication.
+If you haven't done so earlier, set up your SSH keys in `~/.ssh` via `ssh-keygen`
+with a **blank passphrase** and add the content of `id_rsa.pub` to Gitlab and GitHub 
+for authentication.
 
 ### Perparing your machine