doc: fix section headers

README.md

@@ -2,7 +2,7 @@
 
 [Debian GNU/Linux](https://www.debian.org/) desktop operating system, preconfigured for personal computers/workstations
 
-**[![](doc/md/download.png) Download (ISO image, amd64)](https://github.com/nodiscc/debian-live-config/releases/download/2.2.2/dlc-2.2.2-debian-buster-amd64.hybrid.iso)**
+**[![](doc/md/download.png) Download .ISO image](https://github.com/nodiscc/debian-live-config/releases/download/2.2.2/dlc-2.2.2-debian-buster-amd64.hybrid.iso)**
 
 ![](https://i.imgur.com/wJETcZ3.png)
 

config/package-lists/system.list.chroot

@@ -187,13 +187,13 @@ libgl1-mesa-dri:i386
 #Alt: dxvk
 #Alt: reglookup
 
-#Section: configuration management
+#Section: Configuration management
 #Alt: ansible
 
 #Section: Java
 default-jre
 
-#Section: Display manager and screen lockr
+#Section: Display manager/screen locker
 #Description: lightdm
 #Description: light-locker
 lightdm