Update Securing_SSH_with_FIDO2.adoc

corrections

content/SSH/Securing_SSH_with_FIDO2.adoc

@@ -81,7 +81,7 @@ sudo ssh-keygen -t ed25519-sk -O resident -O verify-required -C "Your Comment"
 +
 [source,powershell]
 ----
-sudo ssh-keygen -t ed25519-sk -O resident -O verify-required -C "Your Comment"
+ssh-keygen -t ed25519-sk -O resident -O verify-required -C "Your Comment"
 ----
 +
 . Enter the PIN and touch the key when prompted.
@@ -136,7 +136,7 @@ PubkeyAuthOptions verify-required
 # Public keys location
 AuthorizedKeysFile .ssh/authorized_keys
 # Allow root only with MFA
-PermitRootLogin without-password
+PermitRootLogin prohibit-password
 # Disable password authentication
 PasswordAuthentication no
 PermitEmptyPasswords no
@@ -168,7 +168,7 @@ nano ~/.ssh/authorized_keys
 
 *Using SSSD (Optional)*
 
-* For centralized management, store public keys in LDAP (Active Directory) using SSSD.
+* For centralized management, store public keys in LDAP (for instance Active Directory) using SSSD.
 
 == Using Multiple SSH Credentials
 To generate multiple credentials on the same security key:
@@ -214,7 +214,7 @@ journalctl -r /usr/sbin/sshd
 +
 [source,sh]
 ----
-ssh -vvvv user@host
+ssh -vvv user@host
 ----
 
 *Permission Issues:*