global: fix PEP-8 formatting

This patch was generated by running `autopep8 --diff` on the
source tree and then applying the diff.

assemblers/org.osbuild.oci-archive

@@ -230,7 +230,7 @@ def create_oci_dir(tree, output_dir, options):
     config["rootfs"]["diff_ids"] = [digest]
     manifest["layers"].append(info)
 
-    ## write config
+    # write config
     info = blobs_add_json(blobs, config, "config")
     manifest["config"] = info
 

assemblers/org.osbuild.rawfs

@@ -56,6 +56,7 @@ SCHEMA = """
 }
 """
 
+
 @contextlib.contextmanager
 def mount(source, dest, *options):
     os.makedirs(dest, 0o755, True)