docs(conf): move inline comment note to top of the file

Author: fkzys

etc/atomic.conf

@@ -1,4 +1,8 @@
 # /etc/atomic.conf
+
+# Note: inline comments start at ' #' (space + hash).
+# Values containing a literal ' #' will be truncated at that point.
+
 #BTRFS_MOUNT="/run/atomic/temp_root"
 #NEW_ROOT="/run/atomic/newroot"
 #ESP="/efi"
@@ -12,9 +16,6 @@
 # Note: args with spaces inside are not supported (simple word splitting)
 #CHROOT_COMMAND="/usr/bin/pacman -Syu"
 
-# Note: inline comments start at ' #' (space + hash).
-# Values containing a literal ' #' will be truncated at that point.
-
 # Sign UKI files with sbctl for Secure Boot (requires sbctl)
 #SBCTL_SIGN=1