Don't print filenames in braces for changelog style.

templates/map-cmdline.changelog

@@ -4,12 +4,9 b" changeset_verbose = '{date|isodate} {au"
 start_tags = ' ['
 tag = '{tag}, '
 last_tag = '{tag}]'
-start_files = '('
 file = '{file}, '
-last_file = '{file}):\n\t'
-start_file_adds = '('
+last_file = '{file}:\n\t'
 file_add = '{file_add}, '
-last_file_add = '{file_add}): new file.\n* '
-start_file_dels = '('
+last_file_add = '{file_add}: new file.\n* '
 file_del = '{file_del}, '
-last_file_del = '{file_del}): deleted file.\n* '
+last_file_del = '{file_del}: deleted file.\n* '