Minor edits during proofreading

Chapter_12/Chapter_12.sql

@@ -159,6 +159,7 @@ WITH (FORMAT CSV, HEADER);
 CREATE INDEX tpep_pickup_idx
 ON nyc_yellow_taxi_trips (tpep_pickup_datetime);
 
+-- Count the trip records
 SELECT count(*) FROM nyc_yellow_taxi_trips;
 
 -- Listing 12-8: Counting taxi trips by hour

Chapter_13/Chapter_13.sql

@@ -322,7 +322,7 @@ AS (station text,
     dec numeric(3,0)
 );
 
--- Listing 13-20: Re-classifying temperature data with CASE
+-- Listing 13-20: Reclassifying temperature data with CASE
 
 SELECT max_temp,
        CASE WHEN max_temp >= 90 THEN 'Hot'