[openwrt/openwrt] target/imagebuilder: update help text for manifest target

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/c75a565d2c377e0b54623b5a9aae26fa63e48098

commit c75a565d2c377e0b54623b5a9aae26fa63e48098
Author: Florian Eckert <fe at dev.tdt.de>
AuthorDate: Thu Aug 19 08:42:50 2021 +0200

    target/imagebuilder: update help text for manifest target
    
    - Add a help text for the manifest command.
    - Unify command detail help text to use `manifest`.
    
    Signed-off-by: Florian Eckert <fe at dev.tdt.de>
---
 target/imagebuilder/files/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/target/imagebuilder/files/Makefile b/target/imagebuilder/files/Makefile
index 03a9a3c4ee..acf07a5518 100644
--- a/target/imagebuilder/files/Makefile
+++ b/target/imagebuilder/files/Makefile
@@ -35,6 +35,7 @@ Available Commands:
 	info:	Show a list of available target profiles
 	clean:	Remove images and temporary build files
 	image:	Build an image (see below for more information).
+	manifest: Show all package that will be installed into the image
 	package_depends: Show installation dependency of the package
 
 image:
@@ -50,7 +51,7 @@ image:
 	make image DISABLED_SERVICES="<svc1> [<svc2> [<svc3> ..]]" # Which services in /etc/init.d/ should be disabled
 	make image ADD_LOCAL_KEY=1 # store locally generated signing key in built images
 
-Print manifest:
+manifest:
 	List "all" packages which get installed into the image.
 	You can use the following parameters: