[#2299] Fixed minor review comments

modified:
    src/share/database/scripts/mysql/dhcpdb_create.mysql
    src/share/database/scripts/mysql/upgrade_013_to_014.sh.in
    src/share/database/scripts/pgsql/dhcpdb_create.pgsql
    src/share/database/scripts/pgsql/upgrade_011_to_012.sh.in

src/share/database/scripts/mysql/dhcpdb_create.mysql

@@ -4288,7 +4288,7 @@ UPDATE schema_version
 
 -- This line starts database upgrade to version 14.0.
 
--- Modify shared-network-name foreign key contraint on dhcp4_subnet to not perform
+-- Modify shared-network-name foreign key constraint on dhcp4_subnet to not perform
 -- the update when the network is deleted the cascaded update will not execute
 -- dhcp4_subnet update trigger leaving the updated subnets without audit_entries.
 ALTER TABLE dhcp4_subnet
@@ -4316,7 +4316,7 @@ CREATE TRIGGER dhcp4_shared_network_BDEL BEFORE DELETE ON dhcp4_shared_network
     END $$
 DELIMITER ;
 
--- Modify shared-network-name foreign key contraint on dhcp6_subnet to not perform
+-- Modify shared-network-name foreign key constraint on dhcp6_subnet to not perform
 -- the update when the network is deleted the cascaded update will not execute
 -- dhcp6_subnet update trigger leaving the updated subnets without audit_entries.
 ALTER TABLE dhcp6_subnet

src/share/database/scripts/mysql/upgrade_013_to_014.sh.in

@@ -54,7 +54,7 @@ fi
 mysql "$@" <<EOF
 -- This line starts database upgrade to version 14.0.
 
--- Modify shared-network-name foreign key contraint on dhcp4_subnet to not perform
+-- Modify shared-network-name foreign key constraint on dhcp4_subnet to not perform
 -- the update when the network is deleted the cascaded update will not execute
 -- dhcp4_subnet update trigger leaving the updated subnets without audit_entries.
 ALTER TABLE dhcp4_subnet
@@ -82,7 +82,7 @@ CREATE TRIGGER dhcp4_shared_network_BDEL BEFORE DELETE ON dhcp4_shared_network
     END $$
 DELIMITER ;
 
--- Modify shared-network-name foreign key contraint on dhcp6_subnet to not perform
+-- Modify shared-network-name foreign key constraint on dhcp6_subnet to not perform
 -- the update when the network is deleted the cascaded update will not execute
 -- dhcp6_subnet update trigger leaving the updated subnets without audit_entries.
 ALTER TABLE dhcp6_subnet

src/share/database/scripts/pgsql/dhcpdb_create.pgsql

@@ -4917,7 +4917,7 @@ UPDATE schema_version
 
 -- This starts schema update to 12.0.
 
--- Modify shared-network-name foreign key contraint on dhcp4_subnet to not perform
+-- Modify shared-network-name foreign key constraint on dhcp4_subnet to not perform
 -- the update when the network is deleted the cascaded update will not execute
 -- dhcp4_subnet update trigger leaving the updated subnets without audit_entries.
 ALTER TABLE dhcp4_subnet
@@ -4943,7 +4943,7 @@ END;
 $dhcp4_shared_network_BDEL$
 LANGUAGE plpgsql;
 
--- Modify shared-network-name foreign key contraint on dhcp6_subnet to not perform
+-- Modify shared-network-name foreign key constraint on dhcp6_subnet to not perform
 -- the update when the network is deleted the cascaded update will not execute
 -- dhcp6_subnet update trigger leaving the updated subnets without audit_entries.
 ALTER TABLE dhcp6_subnet

src/share/database/scripts/pgsql/upgrade_011_to_012.sh.in

@@ -38,7 +38,7 @@ START TRANSACTION;
 
 -- This starts schema update to 12.0.
 
--- Modify shared-network-name foreign key contraint on dhcp4_subnet to not perform
+-- Modify shared-network-name foreign key constraint on dhcp4_subnet to not perform
 -- the update when the network is deleted the cascaded update will not execute
 -- dhcp4_subnet update trigger leaving the updated subnets without audit_entries.
 ALTER TABLE dhcp4_subnet
@@ -64,7 +64,7 @@ END;
 \$dhcp4_shared_network_BDEL\$
 LANGUAGE plpgsql;
 
--- Modify shared-network-name foreign key contraint on dhcp6_subnet to not perform
+-- Modify shared-network-name foreign key constraint on dhcp6_subnet to not perform
 -- the update when the network is deleted the cascaded update will not execute
 -- dhcp6_subnet update trigger leaving the updated subnets without audit_entries.
 ALTER TABLE dhcp6_subnet