address one more comment

sql/core/src/test/resources/sql-tests/inputs/udf/postgreSQL/udf-aggregates_part1.sql

@@ -8,7 +8,7 @@
 -- avoid bit-exact output here because operations may not be bit-exact.
 -- SET extra_float_digits = 0;
 
--- This test file was converted from pgSQL/aggregates_part1.sql.
+-- This test file was converted from postgreSQL/aggregates_part1.sql.
 
 SELECT avg(udf(four)) AS avg_1 FROM onek;
 

sql/core/src/test/resources/sql-tests/inputs/udf/postgreSQL/udf-aggregates_part2.sql

@@ -5,7 +5,7 @@
 -- AGGREGATES [Part 2]
 -- https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/sql/aggregates.sql#L145-L350
 --
--- This test file was converted from pgSQL/aggregates_part2.sql.
+-- This test file was converted from postgreSQL/aggregates_part2.sql.
 
 create temporary view int4_tbl as select * from values
   (0),

sql/core/src/test/resources/sql-tests/inputs/udf/postgreSQL/udf-aggregates_part3.sql

@@ -5,7 +5,7 @@
 -- AGGREGATES [Part 3]
 -- https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/sql/aggregates.sql#L352-L605
 
--- This test file was converted from pgSQL/aggregates_part3.sql.
+-- This test file was converted from postgreSQL/aggregates_part3.sql.
 
 -- [SPARK-28865] Table inheritance
 -- try it on an inheritance tree

sql/core/src/test/resources/sql-tests/inputs/udf/postgreSQL/udf-aggregates_part4.sql

@@ -5,7 +5,7 @@
 -- AGGREGATES [Part 4]
 -- https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/sql/aggregates.sql#L607-L997
 
--- This test file was converted from pgSQL/aggregates_part4.sql.
+-- This test file was converted from postgreSQL/aggregates_part4.sql.
 
 -- [SPARK-27980] Ordered-Set Aggregate Functions
 -- ordered-set aggregates

sql/core/src/test/resources/sql-tests/inputs/udf/postgreSQL/udf-case.sql

@@ -6,7 +6,7 @@
 -- https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/sql/case.sql
 -- Test the CASE statement
 --
--- This test file was converted from pgSQL/case.sql.
+-- This test file was converted from postgreSQL/case.sql.
 
 CREATE TABLE CASE_TBL (
   i integer,

sql/core/src/test/resources/sql-tests/inputs/udf/postgreSQL/udf-join.sql

@@ -6,7 +6,7 @@
 -- Test JOIN clauses
 -- https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/sql/join.sql
 --
--- This test file was converted from pgSQL/join.sql.
+-- This test file was converted from postgreSQL/join.sql.
 
 CREATE OR REPLACE TEMPORARY VIEW INT4_TBL AS SELECT * FROM
   (VALUES (0), (123456), (-123456), (2147483647), (-2147483647))

sql/core/src/test/resources/sql-tests/inputs/udf/postgreSQL/udf-select_having.sql

@@ -5,7 +5,7 @@
 -- SELECT_HAVING
 -- https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/sql/select_having.sql
 --
--- This test file was converted from inputs/pgSQL/select_having.sql
+-- This test file was converted from inputs/postgreSQL/select_having.sql
 -- TODO: We should add UDFs in GROUP BY clause when [SPARK-28386] and [SPARK-26741] is resolved.
 
 -- load test data

sql/core/src/test/resources/sql-tests/inputs/udf/postgreSQL/udf-select_implicit.sql

@@ -9,7 +9,7 @@
 -- - thomas 1998-07-09
 -- https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/sql/select_implicit.sql
 --
--- This test file was converted from pgSQL/select_implicit.sql
+-- This test file was converted from postgreSQL/select_implicit.sql
 
 -- load test data
 CREATE TABLE test_missing_target (a int, b int, c string, d string) using parquet;