Normalize changelog configs.

Author: felixfontein

changelogs/config.yaml

@@ -7,13 +7,14 @@ changelog_filename_template: ../CHANGELOG.rst
 changelog_filename_version_depth: 0
 changes_file: changelog.yaml
 changes_format: combined
+ignore_other_fragment_extensions: true
 keep_fragments: false
 mention_ancestor: true
 new_plugins_after_name: removed_features
 notesdir: fragments
 output_formats:
-- rst
-- md
+  - rst
+  - md
 prelude_section_name: release_summary
 prelude_section_title: Release Summary
 sections:
@@ -39,3 +40,4 @@ use_fqcn: true
 add_plugin_period: true
 changelog_nice_yaml: true
 changelog_sort: version
+vcs: auto