manual/user guide/customization: re-order introduction

This patch re-orders the enumeration of typical project customization
actions:
- move the 'patching packages' section downwards.
- group the entries on post-build scripts and rootfs-overlays to match the
  actual section text.

Since indented enumerations use asterixes, update the top-level entries with
asterixes too for consistency.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

docs/manual/customize.txt

@@ -6,20 +6,21 @@
 
 Typical actions you may need to perform for a given project are:
 
-- configuring Buildroot (including build options and toolchain,
+* configuring Buildroot (including build options and toolchain,
   bootloader, kernel, package and filesystem image type selection)
-- configuring other components, like the Linux kernel and BusyBox
-- adding project-specific patches to some packages (using
-  +BR2_GLOBAL_PATCH_DIR+)
-- adding or overwriting files on the target filesystem (using
-  +BR2_ROOTFS_OVERLAY+)
-- modifying or deleting files on the target filesystem (using
-  +BR2_ROOTFS_POST_BUILD_SCRIPT+)
-- running arbitrary commands prior to generating the filesystem image
-  (using +BR2_ROOTFS_POST_BUILD_SCRIPT+)
-- running arbitrary commands after generating the filesystem image
+* configuring other components, like the Linux kernel and BusyBox
+* customizing the generated target filesystem
+  ** adding or overwriting files on the target filesystem (using
+     +BR2_ROOTFS_OVERLAY+)
+  ** modifying or deleting files on the target filesystem (using
+     +BR2_ROOTFS_POST_BUILD_SCRIPT+)
+  ** running arbitrary commands prior to generating the filesystem image
+     (using +BR2_ROOTFS_POST_BUILD_SCRIPT+)
+* running arbitrary commands after generating the filesystem image
   (using +BR2_ROOTFS_POST_IMAGE_SCRIPT+)
-- adding project-specific packages
+* adding project-specific patches to some packages (using
+  +BR2_GLOBAL_PATCH_DIR+)
+* adding project-specific packages
 
 An important note regarding such 'project-specific' customizations:
 please carefully consider which changes are indeed project-specific and
@@ -45,6 +46,6 @@ include::customize-rootfs.txt[]
 
 include::customize-post-image.txt[]
 
-include::customize-store.txt[]
-
 include::customize-packages.txt[]
+
+include::customize-store.txt[]