Update add-ssh-key-to-ssh-agent-commandline.md

Author: GuillaumeBAECHLER

data/reusables/ssh/add-ssh-key-to-ssh-agent-commandline.md

@@ -1,3 +1,3 @@
 ```shell
-$ ssh-add ~/.ssh/id_rsa
+$ ssh-add ~/.ssh/id_ed25519
 ```