Update comments in schema

postgres/schema.sql

@@ -167,7 +167,7 @@ CREATE TABLE playlists (
 -- be determined.
 -- The odometer column is in miles. The game shows the odometer to the 1/10th mile precision.
 -- The clock is in minutes since 00:00, in 12h time.
--- The time of day is one of "day", "dusk", "night", or "dawn"
+-- The time of day is one of "day", "dusk", "night", "dawn" or "score"
 -- The segment may be NULL, which indicates a manually-inserted value.
 -- The primary key serves two purposes:
 --   It provides an index on channel, followed by a range index on timestamp