[rawfs] Add example configuration

 - Part of the tests checks that the example configuration
   is not empty. So uncomment the example. (Distro's should
   not be installing the example configs, and this one in
   particular needs to be customized).

src/modules/rawfs/rawfs.conf

@@ -2,23 +2,23 @@
 
 ---
 
-# To apply a custom partition layout, it has to be defined this way :
-#
-# targets:
-#     - mountPoint: /
-#       source: /
-#     - mountPoint: /home
-#       source: /images/home.img
-#       resize: true
-#     - mountPoint: /data
-#       source: /dev/mmcblk0p3
+# To apply a custom partition layout, it has to be defined as a list of targets.
 #
 # For each target, the following attributes must be defined:
 #       * mountPoint: The mount point of the destination device on the installed system
 #         The corresponding block device will automatically be identified and used as the
 #         destination for the operation
 #       * source: The source filesystem; it can be the mount point of a locally (on the
-#         live system) mounted filesystem, a disk image, or a block device
+#         live system) mounted filesystem, a path to a disk image, or a block device
 #       * resize (optional): Expand the destination filesystem to fill the whole
 #         partition at the end of the operation; this works only with ext filesystems
 #         for now
+
+targets:
+    - mountPoint: /
+      source: /
+    - mountPoint: /home
+      source: /images/home.img
+      resize: true
+    - mountPoint: /data
+      source: /dev/mmcblk0p3