packit: Fix indentation

Use standard indentation for lists underneath a dictionary key. Leave
some space between the larger top-level keys.

packit.yaml

@@ -3,9 +3,11 @@
 # See https://packit.dev/docs/configuration/ for the format of this file
 
 specfile_path: cockpit-starter-kit.spec
+
 srpm_build_deps:
-- make
-- npm
+  - make
+  - npm
+
 actions:
   post-upstream-clone:
     - make cockpit-starter-kit.spec
@@ -15,6 +17,7 @@ actions:
   create-archive: make dist
   # starter-kit.git has no release tags; your project can drop this once you have a release
   get-current-version: make print-version
+
 jobs:
   - job: tests
     trigger: pull_request