regularlize changelog whitespace

developer/bin/generate_changelog

@@ -234,23 +234,23 @@ def header
 ## #{next_release.sub(/^v/,'')}
 
 * __Casks__
- - N Casks added ...
- - N total Casks
+  - N Casks added ...
+  - N total Casks
 * __Features__
- - none
+  - none
 * __Breaking Changes__
- - none
+  - none
 * __Fixes__
- - none
+  - none
 * __Internal Changes__
- - none
+  - none
 * __Documentation__
- - N doc commits since ...
+  - N doc commits since ...
 * __Contributors__
- - N new contributors since ...
- - N total contributors
+  - N new contributors since ...
+  - N total contributors
 * __Release Date__
- - YYYY-MM-DD HH:MM:SS UTC
+  - YYYY-MM-DD HH:MM:SS UTC
 EOT
 end