doc: update script descriptions

Author: StrangeRanger

auditing/Lynis Installer/lynis-installer

@@ -1,6 +1,9 @@
 #!/bin/bash
 #
-# A script for installing and running lynis with recommended options.
+# This script downloads a security auditing tool called Lynis, designed to scan a system
+# and identify security issues, and provides recommendations on how to better secure it.
+# Lynis, unless an error is encountered, will always be downloaded to the user's root
+# directory (/home/USERNAME/).
 #
 # Version: v1.0.6
 # License: MIT License

hardening/Root Locker/root-locker

@@ -1,6 +1,8 @@
 #!/bin/bash
 #
-# Locks the root account and erases it's current password.
+# This script locks and removes the root account's password (if one is set). This
+# prevents users from successfully logging into the root account via su. Note that it
+# doesn't prevent users from becoming root via methods such as sudo su.
 #
 # Version: v1.0.6
 # License: MIT License

hardening/SSHD Hardening/sshd

@@ -1,6 +1,7 @@
 #!/bin/bash
 #
-# Hardens sshd by modifying the configurations of '/etc/ssh/sshd_config'.
+# This script hardens the sshd-server, by modifying it's configuration file
+# (sshd_config).
 #
 # Note: This configures sshd_config to the recommendations of the security auditing tool
 #       knonw as Lynis (https://github.com/CISOfy/lynis).