stages: consistent docstrings

Make docstrings consistent across stages regarding whitespace and
summary line.

stages/org.osbuild.bootc.install-to-filesystem

@@ -1,5 +1,6 @@
 #!/usr/bin/python3
-"""Run bootc install to-filesystem
+"""
+Run bootc install to-filesystem
 
 Note that this needs the disk.img in the inputs as one continous
 devices so that bootupd can install grub to the mbr. It also needs

stages/org.osbuild.chown

@@ -1,6 +1,7 @@
 #!/usr/bin/python3
 """
 Change file owner and group
+
 Change the file user and/or group ownership of one or more files or directories inside the tree.
 
 Notes:

stages/org.osbuild.coreos.platform

@@ -1,5 +1,7 @@
 #!/usr/bin/python3
 """
+Setup a CoreOS platform
+
 In CoreOS we have the concept of a platform (i.e. AWS, GCP, Metal, QEMU)
 where each platform has its own provided disk image with slightly
 differing settings/behavior. This stage will perform the necessary

stages/org.osbuild.fdo

@@ -1,5 +1,7 @@
 #!/usr/bin/python3
 """
+FDO initial DIUN certificates
+
 FDO stage to write down the initial DIUN pub key root certificates
 to be read by the manufacturer client
 

stages/org.osbuild.gcp.guest-agent.conf

@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 """
-Crate or modify the GCP guest-agent config
+Create or modify the GCP guest-agent config
 
 Create or modify the GCP guest-agent config, depending on the
 scope either at:

stages/org.osbuild.grub2.iso

@@ -2,7 +2,6 @@
 """
 Create a boot filesystem tree, can be consumed to create
 an efiboot.img.
-
 """
 
 import os

stages/org.osbuild.isolinux

@@ -1,7 +1,6 @@
 #!/usr/bin/python3
 """
 Create an isolinux bootloader
-
 """
 
 import os

stages/org.osbuild.ostree.post-copy

@@ -1,5 +1,6 @@
 #!/usr/bin/python3
-"""Apply post-copy updates to an ostree repo/deployment
+"""
+Apply post-copy updates to an ostree repo/deployment
 
 The way osbuild works the ostree deployment is built in a chroot and
 stored as a regular directory of files before finally being copied to

stages/org.osbuild.ostree.sign

@@ -1,11 +1,11 @@
 #!/usr/bin/python3
-"""Sign a commit in an ostree repo
+"""
+Sign a commit in an ostree repo
 
 Given an ostree commit (referenced by a ref) in a repo and an ed25519
 secret key this adds a signature to the commit detached metadata.
 This commit can then be used to validate the commit, during ostree
 pull, during boot, or at any other time.
-
 """
 
 import os

stages/org.osbuild.pacman.conf

@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 """
-configure pacman
+Configure pacman
 """
 import os
 import sys

stages/org.osbuild.pacman.mirrorlist.conf

@@ -1,6 +1,6 @@
 #!/usr/bin/python3
 """
-configure pacman's mirrorlist
+Configure pacman's mirrorlist
 """
 import os
 import pathlib

stages/org.osbuild.sysconfig

@@ -1,6 +1,5 @@
 #!/usr/bin/python3
 """
-
 Configure sysconfig files
 
 The sysconfig directory contains a variety of system configuration files.
@@ -48,7 +47,6 @@ Network-scripts supports the params:
       - userctl(USERCTL) of type boolean
 
 This stage will overwrite existing files.
-
 """
 
 import os

stages/org.osbuild.yum.config

@@ -6,6 +6,7 @@ The stage currently supports configuring http_caching in YUM config and
 locales in langpacks plugin. If the config files don't exist, they
 are created.
 """
+
 import os
 import sys